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• How to encourage Windows administrators to pick up scripting

  - by icelava

  When i worked as an administrator in my first job, I was frustrated our administration processes with Windows servers were a series of point-and-clicks; we could never match the level of efficiency with the Unix servers which had a group of shell scripts to automate a lot of the work. I soon read about WSH and ADSI and wasted no time learning just how much automation I was able to achieve with scripting. There was a huge problem though - almost none of my Windows colleagues were really interested in learning scripting. They seemed happy with the manually mouse-clicking chores and were never excited at the prospect of using scripts to do the work on their behalf. I struggled to convince them to pick up scripting skills despite the evident increases in efficiency. I left that job in pursuit of a full-time software development career thereafter. Almost a decade on working in various environments and different customers, I still encounter Windows administrators mainly possessing this general "mood" where they would avoid scripting as much as possible. Despite the increasing level of accessibility Windows server technologies are opening up for scripting and automation. I am almost certain the majority of administrators are administrators precisely because they absolutely hate performing any kind of programming duties. What are some means to encourage and motivate administrators that scripting can really help them in the long run?

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• Run GUI application via cronjob in Ubuntu?

  - by Christoffer

  Hi, I have a remote server running "Ubuntu 10.04 Desktop". From it I want to run a script that walks through a list of websites and captures screenshots of them. The script is working and thoroughly tested. When I SSH to the server with ssh -X user@ip-adress I can run my script by calling ./myscript.py and everything will work OK. I then modifed my crontab file and added... 59 17 * * * env DISPLAY=:0 /path/to/myscript.py ...as recommended by the Ubuntu WIKI. I can see in the /var/log/syslog that my cron job is started, but it doesn't capture any screenshots. When running env DISPLAY=:0 /path/to/myscript.py from the shell I get No protocol specified myscript.py: cannot connect to X server :0 If I ssh to the server without the -X option I only get the second row of the error: myscript.py: cannot connect to X server :0 What can I try now? More details I have run xhost +local: and checked the output of xhost to see that the option was set correctly. If I run ls /tmp/.X11-unix/ the output is X0 The server only has one screen. Thank you in advance!

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• Where is my VMware-ws FreeNAS CIFS(ZFS) bottle-neck?

  - by maka

  Background: I'm building a quiet HTPC + NAS that is also supposed to be used for general computer usage. I'm so far generally happy with things, it was just that I was expecting a little better IO performance. I have no clue if my expectations are unreal. The NAS is there as a general purpose file storage and as a media server for XBMC and other devices. ZFS is a requirement. Question: Where is my bottle-neck, and is there anything I can do config wise, to improve my performance? I'm thinking VM-disk settings could be something but I really have no idea where to go since I'm neither experienced with FreeNAS nor VMware-WS. Tests: When I'm on the host OS and copy files (from the SSD) to the CIFS share, I get around 30 Mbytes/sec read and write. When I'm on my laptop laptop, wired to the network, I get about the same specs. The test I've done are with a 16 GB ISO, and with about 200 MB of RARs and I've tried avoiding the RAM-cache by reading different files than the ones I'm writing ( 10 GB). It feels like having less CPU cores is a lot more efficient, since the resource manager in Windows reports less CPU-usage. With 4 cores in VMware, CPU usage was 50-80%, with 1 core it was 25-60%. EDIT: HD ActiveTime was quite high on SSD so I moved the page file, disabled hibernate and enabled Win DiskCache both on SSD and RAID. This resulted in no real performance difference for one file, but if i transferred 2 files the total speed went up to 50 Mbytes/s vs ~40. The ActiveTime avg also went down a lot (to ~20%) but has now higher bursts. DiskIO is on ~ 30-35 Mbytes/s avgs, with ~100Mb bursts. Network is on 200-250Mbits/s with ~45 active TCP connections. Hardware Asus F2A85-M Pro A10-5700 16GB DDR3 1600 OCZ Vertex 2 128GB SSD 2x Generic 1tb 7200 RPM drives as RAID0 (in win7) Intel Gigabit Desktop CT Software Host OS: Win7 (SSD) VMware Worksation 9 (SSD) FreeNAS 8.3 VM (20GB VDisk on SSD) CPU: I've tried 1, 2 and 4 cores. Virtualisation engine, Preferred mode: Automatic 10,24Gb ram 50Gb SCSI VDisk on the RAID0, VDisk is formatted as ZFS and exposed through CIFS through FreeNAS. NIC Bridge, Replicate physical network state Below are two typical process print-outs while I'm transfering one file to the CIFS share. last pid: 2707; load averages: 0.60, 0.43, 0.24 up 0+00:07:05 00:34:26 32 processes: 2 running, 30 sleeping Mem: 101M Active, 53M Inact, 1620M Wired, 2188K Cache, 149M Buf, 8117M Free Swap: 4096M Total, 4096M Free PID USERNAME THR PRI NICE SIZE RES STATE TIME WCPU COMMAND 2640 root 1 102 0 50164K 10364K RUN 0:25 25.98% smbd 1897 root 6 44 0 168M 74808K uwait 0:02 0.00% python last pid: 2746; load averages: 0.93, 0.60, 0.33 up 0+00:08:53 00:36:14 33 processes: 2 running, 31 sleeping Mem: 101M Active, 53M Inact, 4722M Wired, 2188K Cache, 152M Buf, 5015M Free Swap: 4096M Total, 4096M Free PID USERNAME THR PRI NICE SIZE RES STATE TIME WCPU COMMAND 2640 root 1 76 0 50164K 10364K RUN 0:52 16.99% smbd 1897 root 6 44 0 168M 74816K uwait 0:02 0.00% python I'm sorry if my question isn't phrased right, I'm really bad at these kind of things, and it is the first time I post here at SU. I also appreciate any other suggestions to something, I could have missed.

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• Having trouble keeping a 1GB RAM Centos server running

  - by Josh

  This is my first time configuring a VPS server and I'm having a few issues. We're running Wordpress on a 1GB Centos server configured per the internet (online research). No custom queries or anything crazy but closing in on 8K posts. At arbitrary intervals, the server just goes down. From the client side, it just says "Loading..." and will spin more or less indefinitely. On the server side, the shell will lock completely. We have to do a hard reboot from the control panel and then everything is fine. Watching "top" I see it hovering between 35 - 55% memory usage generally and occasional spikes up to around 80%. When I saw it go down, there were about 30 - 40 Apache processes showing which pushed memory over the edge. "error_log" tells me that maxclients was reached right before each reboot instance. I've tried tinkering with that but to no avail. I think we'll probably need to bump the server up to the next RAM level but with ~120K pageviews per month, it seems like that's a bit overkill since it was running fairly well on a shared server before. Any ideas? httpd.conf and my.cnf values to add? I'll update this with the current ones if that helps. Thanks in advance! This has been a fun and important learning experience but, overall, quite frustrating! Edit: quick top snapshot: top - 15:18:15 up 2 days, 13:04, 1 user, load average: 0.56, 0.44, 0.38 Tasks: 85 total, 2 running, 83 sleeping, 0 stopped, 0 zombie Cpu(s): 6.7%us, 3.5%sy, 0.0%ni, 89.6%id, 0.0%wa, 0.0%hi, 0.1%si, 0.0%st Mem: 2051088k total, 736708k used, 1314380k free, 199576k buffers Swap: 4194300k total, 0k used, 4194300k free, 287688k cached

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• GlassFish v2.1 -- getting Application Client and Eclipselink to work together?

  - by Nick

  We are trying to use Eclipselink 1.1 with Glassfish v2.1. Following the instructions on: http://wiki.glassfish.java.net/Wiki.jsp?page=FaqEclipseLinkGlassFishV2 I adapted the instructions for the appclient script on linux by adding the lines: APPCPATH=$APPCPATH:$AS_INSTALL/lib/eclipselink-1.1.1.jar export APPCPATH to the appclient shell script. This however is not working. On running the application client (using Glassfish's webstart), I get the error: WARNING: "IOP00810257: (MARSHAL) Could not load class org.eclipse.persistence.indirection.IndirectList" Anyone else succeed in getting GF v 2.1 to work with eclipselink? or any ideas on what I might be doing wrong? I found this bug report: http s://glassfish.dev.java.net/issues/show_bug.cgi?id=8204 (New users can't post more than 1 link, so remove the space between 'http' and 's'.) Where Tim Quinn (tjquinn) said: App client container support for persistence is not yet in place I think this refers only to Glassfish v3, and it should be working in Glassfish v2. Is this correct? I'm working on the assumption that this will work once the ACC knows where to find the eclipselinks jar. Thanks in advance, Nick.

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• Git clone/pull across local network

  - by Tom Sarduy

  I'm trying to clone/pull a repository in another PC using Ubuntu Quantal. I have done this on Windows before but I don't know what is the problem on ubuntu. I tried these: git clone file:////pc-name/repo/repository.git git clone file:////192.168.100.18/repo/repository.git git clone file:////user:pass@pc-name/repo/repository.git git clone smb://c-pc/repo/repository.git git clone //192.168.100.18/repo/repository.git Always I got: Cloning into 'intranet'... fatal: '//c-pc/repo/repository.git' does not appear to be a git repository fatal: The remote end hung up unexpectedly or fatal: repository '//192.168.100.18/repo/repository.git' does not exist More: The other PC has username and password Is not networking issue, I can access and ping it. I just installed git doing apt-get install git (dependencies installed) I'm running git from the terminal (I'm not using git-shell) What is causing this and how to fix this? Any help would be great! UPDATE I have cloned the repo on Windows using git clone //192.168.100.18/repo/intranet.git without problems. So, the repo is accessible and exist! Maybe the problem is due user credentials?

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• Capistrano + Nginx + Passenger = 403

  - by slimchrisp

  I asked this over at stackoverflow as well, but still haven't received any answers that have helped me to solve this problem. I have spent almost a week at this point trying to solve the issue, and I'm just not making any headway. It seems that this issue is pretty common, but none of the solutions I found online work for me. A buddy of mine is actually creating the same setup, and he is having the same issue. After a few days stuck with the 403 error I started over using this tutorial: http://blog.ninjahideout.com/posts/a-guide-to-a-nginx-passenger-and-rvm-server I had hoped starting from scratch using this tutorial would work, but no dice. Either way, if you view the tutorial you can see what steps I have taken. Here is essentially what I have going on. I have a VPS account on linode.com Server OS is Ubuntu 10.04 Local OS (shouldn't matter, but just so you know) used to deploy with Capistrano is Snow Leopard 10.6.6 I use RVM on the server. Version is 1.2.2 I was previously on ruby-1.9.2-p0 [ i386 ], but per the tutorial listed above I switched to ree-1.8.7-2010.02 [ i386 ]. Running 'which ruby' from the command line verifies that I am using 1.8.7 with the following output: /usr/local/rvm/rubies/ree-1.8.7-2010.02/bin/ruby passenger -v prints the following: Phusion Passenger version 3.0.2 Running 'nginx -v' gives me a message that the command nginx could not be found. The server is definitely there and running as I can use nginx to serve static files, but this could have something to do with my problem. I have two users dealing with the install. root which I used to install everything, and deployer which is a user I created specifically to for deploying my applications My web app directory is in the deployer user's home directory as follows: /home/deployer/webapps/mysite.com/public Per Capistrano default deploy, a symbolic link called current is created in the public folder, and points to /home/deployer/webapps/mysite.com/public/releases/most_current_release I have chmodded the deployer directory recursively to 777 /opt/nginx permissions: rwxr-xr-x /usr/local/rvm/gems/ree-1.8.7-2010.02/gems/passenger-3.0.2 permissions: rwxrwsrwx My nginx config file has gone through just short of eternity variations, but currently looks like this: ================================================================================== worker_processes 1; events { worker_connections 1024; } http { passenger_root /usr/local/rvm/gems/ree-1.8.7-2010.02/gems/passenger-3.0.2; passenger_ruby /usr/local/rvm/bin/passenger_ruby; include mime.types; default_type application/octet-stream; sendfile on; keepalive_timeout 65; server { # listen *:80; server_name mysite.com www.mysite.com; root /home/deployer/webapps/mysite.com/public/current; passenger_enabled on; passenger_friendly_error_pages on; access_log logs/mysite.com/server.log; error_log logs/mysite.com/error.log info; error_page 500 502 503 504 /50x.html; location = /50x.html { root html; } } } ================================================================================== I bounce nginx, hit the site, and boom. 403, and logs say directory index of /home/deployer... is forbidden As others with a similar problem have said, you can drop an index.html into the public/releases/current_release and it will render. But rails no worky. That's basically it. At this point I have just about completely exhausted every possible solution attempt I can think of. I am a programmer and definitely not a sysadmin, so I am 99% sure this has something to do with permissions that I have hosed, but for the life of me I just can't figure out where. If anyone can help I would really really appreciate it. If there's any specific permission things you want me to check (ie groups/permissions), can you please include the commands to do so as well. Hopefully this will help others in the future who read this post. Let me know if there is any other information I can provide, and thanks in advance!!!

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• How to avoid sshfs freezing?

  - by Andreas Hagen

  So the issue is this: I've installed sshfs on Ubuntu 12.04 and I'm trying to connect to a couple of remote servers. So initially the mount seams successful. Sometimes Gnome even picks it up and displays the "new device found" box at the bottom of the screen. but from here on there is not much that works. Or at least not any more. The first couple of times i connected it seamed to work fine, and I was able to transfer some files, then i disconnected using fusermount -u <folder> and after reconnecting a little later the trouble started. Now after executing sshfs -o ServerAliveInterval=15 -o reconnect -C -o workaround=all -o idmap=user root@<host>:/ <folder>, when I change directory into the mount-point, the shell just freezes. Strangely ls -al <folder> works when listing just the root of the remote system, but nothing more. Also every file-explorer I've tried freezes just like cd <folder>. To me it seamed like there was some kind of zombie thread or something hanging around my system, due to the fact that it did work the first time, so I have tried rebooting but no luck. sshfs -V gives this: SSHFS version 2.3 FUSE library version: 2.8.6 fusermount version: 2.8.6 using FUSE kernel interface version 7.12 So yea, any ideas?

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• Is there a faster way to change default apps associated with file types on OS X?

  - by Lri

  Is there anything more convenient than using RCDefaultApp or Magic Launch, or just repeatedly pressing the Change All buttons in Finder's information panels? I thought about writing a shell script that would modify the CFBundleDocumentTypes arrays in Info.plist files. But each app has multiple keys (sometimes an icon) that would need to be changed. lsregister can't be used to make specific modifications to the Launch Services database. $ `locate lsregister` -h lsregister: [OPTIONS] [ <path>... ] [ -apps <domain>[,domain]... ] [ -libs <domain>[,domain]... ] [ -all <domain>[,domain]... ] Paths are searched for applications to register with the Launch Service database. Valid domains are "system", "local", "network" and "user". Domains can also be specified using only the first letter. -kill Reset the Launch Services database before doing anything else -seed If database isn't seeded, scan default locations for applications and libraries to register -lint Print information about plist errors while registering bundles -convert Register apps found in older LS database files -lazy n Sleep for n seconds before registering/scanning -r Recursive directory scan, do not recurse into packages or invisible directories -R Recursive directory scan, descending into packages and invisible directories -f force-update registration even if mod date is unchanged -u unregister instead of register -v Display progress information -dump Display full database contents after registration -h Display this help

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• Migrating JBoss installation and install it on a PHP server

  - by David Martinez

  I'm configuring a new dedicated server that is going to run 3 sites, 2 of then are migrating from a old server. Each site have it's own domain and dedicated ip. 2 of this sites are already up and running on php (one of then use cakePHP), the third site is a migration from an old server and it runs on JBoss. 1) Is it possible to have both Jboss and php running on the same Apache instance, or would I have to install a new one? 2) Can I just move the old JBoss server directory to the new server and start the server with the shell script? From what I red here JBoss is distributed as a zip/tgz file with the server structure, so moving it from the old server to the new one should be the same. I want to do this because the old server is already configured, and it have 2 JBoss instances. I didn't develop this site and I don't have experience with JBoss. I have some documentation of the site, but it is not much, mostly server structure and the technology they used. The new server runs on CentOS with CPanel, I have full root access to the server. This question is similar to this one How can I run JBoss Application Server and Apache on the same server? but there he didn't have a dedicated IP for each domain.

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• Debian dependency problems / partially installed

  - by Michael

  I tried to install curl support for php 5 on my debian squeeze machine and since I'm having problems. After trying to install curl I got dependency issues which I tried to solve by removing what started the issues. From one thing came another and I'm currently looking at ~29 issues when I try to do an apt-get upgrade. These issues vary from unable to config, dependency and unable to remove errors. I tried apt-get upgrade -f and installing packages using dpkg command. I tried removing using purge and force. I manually removed stuff to try and fix it. I tried running dpkg --configure -a. I've to say I'm still pretty new to linux so I'm out of idea's and cant seem to find an answer online that matches my problems. Here's a part of the apt-get upgrade command output: Reading package lists... Building dependency tree... Reading state information... 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded. 29 not fully installed or removed. After this operation, 0 B of additional disk space will be used. Setting up libgeoip1 (1.4.7~beta6+dfsg-1) ... Bus error dpkg: error processing libgeoip1 (--configure): subprocess installed post-installation script returned error exit status 135 Setting up libisc62 (1:9.7.3.dfsg-1~squeeze3) ... Bus error dpkg: error processing libisc62 (--configure): subprocess installed post-installation script returned error exit status 135 dpkg: dependency problems prevent configuration of libdns69: libdns69 depends on libgeoip1 (>= 1.4.7~beta6+dfsg); however: Package libgeoip1 is not configured yet. libdns69 depends on libisc62; however: Package libisc62 is not configured yet. dpkg: error processing libdns69 (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of libisccc60: libisccc60 depends on libisc62; however: Package libisc62 is not configured yet. dpkg: error processing libisccc60 (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of libisccfg62: libisccfg62 depends on libdns69; however: Package libdns69 is not configured yet. .. continues Errors were encountered while processing: libgeoip1 libisc62 libdns69 libisccc60 libisccfg62 libbind9-60 liblwres60 bind9-host libavahi-core7 libdaemon0 avahi-daemon libexif12 libffi5 libgomp1 libgphoto2-port0 libgphoto2-2 libperl5.10 libsensors4 libsnmp15 libhpmud0 libieee1284-3 libnss-mdns libossp-uuid16 libpq5 libv4l-0 libsane libsane-hpaio libssh2-1 python-gobject dpkg --configure -a Setting up libpq5 (8.4.8-0squeeze2) ... Bus error dpkg: error processing libpq5 (--configure): subprocess installed post-installation script returned error exit status 135 Setting up libperl5.10 (5.10.1-17squeeze2) ... Bus error dpkg: error processing libperl5.10 (--configure): subprocess installed post-installation script returned error exit status 135 Setting up libffi5 (3.0.9-3) ... Bus error dpkg: error processing libffi5 (--configure): subprocess installed post-installation script returned error exit status 135 Setting up libexif12 (0.6.19-1) ... .. continues Suggestions are really welcome I really don't know what to do. Michael.

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• Cisco ASA user authentication options - OpenID, public RSA sig, others?

  - by Ryan

  My organization has a Cisco ASA 5510 which I have made act as a firewall/gateway for one of our offices. Most resources a remote user would come looking for exist inside. I've implemented the usual deal - basic inside networks with outbound NAT, one primary outside interface with some secondary public IPs in the PAT pool for public-facing services, a couple site-to-site IPSec links to other branches, etc. - and I'm working now on VPN. I have the WebVPN (clientless SSL VPN) working and even traversing the site-to-site links. At the moment I'm leaving a legacy OpenVPN AS in place for thick client VPN. What I would like to do is standardize on an authentication method for all VPN then switch to the Cisco's IPSec thick VPN server. I'm trying to figure out what's really possible for authentication for these VPN users (thick client and clientless). My organization uses Google Apps and we already use dotnetopenauth to authenticate users for a couple internal services. I'd like to be able to do the same thing for thin and thick VPN. Alternatively a signature-based solution using RSA public keypairs (ssh-keygen type) would be useful to identify user@hardware. I'm trying to get away from legacy username/password auth especially if it's internal to the Cisco (just another password set to manage and for users to forget). I know I can map against an existing LDAP server but we have LDAP accounts created for only about 10% of the user base (mostly developers for Linux shell access). I guess what I'm looking for is a piece of middleware which appears to the Cisco as an LDAP server but will interface with the user's existing OpenID identity. Nothing I've seen in the Cisco suggests it can do this natively. But RSA public keys would be a runner-up, and much much better than standalone or even LDAP auth. What's really practical here?

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• Juniper NetScreen NS-5GT traffic monitoring

  - by blah

  I've done casual research into the subject and am truly dismayed at the lack of compatible tools for such a simple task. Maybe someone can provide assistance. We have a NetScreen NS-5GT in the office. I need to be able to get a glance of current traffic per endpoint -- I think the equivalent of 'get sessions' with byte counts/rates. I don't care about bars, graphs, and reports. Something as simple as a classic software firewall display would be perfect. I can't shell out money on something real like SolarWinds products, so a free solution is essential. I'm willing to do a little work but refuse to program something from scratch. It's not prudent right now for me to install a hub or otherwise mess around physically. There must be something out there I can use, maybe in combination. I don't believe I'm asking too much. Specific answers only please, e.g. monitoring software you know will actually work with this antiquated device. I've read about general approaches to the broader problem dozens of times already.

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• kde dropping keyboard

  - by shabbychef

  I am having problems with KDE 'dropping' my keyboard. It happens periodically when using my gentoo box directly, but has become much worse when accessing via NX (from a Mac laptop). Some possibly irrelevant clues: it appears to happen more often when the system is under higher CPU load the mouse continues to work, but no windows will accept any kind of keyboard focus. kwin will not accept tabbing between windows. when working on the machine directly, I can ctrl-alt-F1 to get to a shell (obviously this does nothing over NX). so I think it is KDE and not xorg. am running kwin-4.3.5-r1, and KDE-4.3.5 generally. this problem definitely appeared after upgrading to kde-4.x, but I do not remember if it appeared in kde-4.2. sometimes the keyboard will reappear, but sometimes I have to kill my kde session. playing with accessibility options or window-focus-stealing options in system-settings under kde will often make the keyboard responsive again, only to drop it perhaps minutes later. I had read online this might be an evdev problem under X (again, I think this is KDE, not X, but will try anything). as a result, I have fiddled with my xorg.conf endlessly. I even deleted it entirely and let nvidia-xconfig have a stab at it, with no luck I am tearing my hair out over this. I have done emerge -e xorg-server and am right now doing emerge -e kwin, to rebuild all packages that might be relevant. no luck with the xorg-server rebuild. any help appreciated. thanks,

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• Scripting a permanent CTRL / CAPS swap in Gnome?

  - by Duncan Bayne

  I have a bash script that I use to configure a vanilla Ubuntu (10.10 Maverick Meerkat) installation to be exactly the way I want it. I make extensive use of gconftool-2 to configure the desktop, set up shortcut keys, etc. Now, I'm trying to swap the CTRL and CAPS keys. I have found two ways of doing this: In Gnome, go to System - Preferences - Keyboard - Layout - Options and make the change in there. This works well, but I don't know how to script this; the setting doesn't seem to be stored in the usual place as I can't find it with gconf-editor. Add the line setxkbmap -option "ctrl:swapcaps" to my .bashrc file. That works too, until I suspend the machine & then resume it. At that point the CTRL and CAPS behaviour return to normal, until I cause .bashrc to be run again by opening a new shell. This behaviour has been reported as a bug in RedHat. Could someone please suggest a way of switching those keys that is both permanent, and can be scripted? I'm sure I must be missing something obvious here ...

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• Set primary group of file or directory on Samba share from Windows

  - by Hubert Kario

  Short version: I have such situation on a Samba share: $ ls -lha total 12K drwxr-xr-x 3 hka Domain Users 4.0K Jan 11 17:07 . drwxrwxrwt 19 root root 4.0K Jan 11 17:06 .. drwxr-xr-x 2 hka Domain Users 4.0K Jan 11 17:07 dir A -rw-r--r-- 1 hka Domain Users 0 Jan 11 17:07 file A How am I able to change this to following using only Windows SMB/CIFS client (using 3rd party applications is OK) $ ls -lha total 12K drwxr-xr-x 3 hka Domain Users 4.0K Jan 11 17:07 . drwxrwxrwt 19 root root 4.0K Jan 11 17:06 .. drwxr-xr-x 2 hka ntpoweruser 4.0K Jan 11 17:07 dir A -rw-r--r-- 1 hka ntpoweruser 0 Jan 11 17:07 file A Rationale and background info I'm using POSIX ACLs on Samba shares. Together with acl group control for Samba, it allows me to delegate management of permissions to different users based on group membership. Thing is, when I create a new file on a Samba share, I'm unable to set its primary group (the one that grants permission to change its permissions). It's being set to my primary group (Domain Users) or group set using force group option in smb.conf share definition. Removing all groups in windows except the one I want to become the new primary group doesn't work. I can change it using chgrp group folder/ as regular user though shell, but it's suboptimal (not all users are *nix users). Trying to set new owner to group from Windows file permission window makes the Samba to return permission denied with following log entry: [2012/01/05 21:13:03.349734, 3] smbd/nttrans.c:1899(call_nt_transact_set_security_desc) call_nt_transact_set_security_desc: file = projects/project A/New folder, sent 0x1 [2012/01/05 21:13:03.349774, 3] smbd/posix_acls.c:1208(unpack_nt_owners) unpack_nt_owners: unable to validate owner sid for S-1-5-21-4526631811-884521863-452487935-11025 [2012/01/05 21:13:03.349804, 3] smbd/error.c:80(error_packet_set) error packet at smbd/nttrans.c(1909) cmd=160 (SMBnttrans) NT_STATUS_INVALID_OWNER The SID is correct and belongs to group I specified in GUI.

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• GPO startup script not copying files

  - by marcwenger

  I created a GPO startup script to execute for computers in a specific AD container. The script takes a file from the AD netlogon share and places it on a directory on the computer. Given the right permissions (ie: myself) can execute the script just fine and the file copies. But it doesn't work on startup - the file does not copy over from the AD server. The startup script should run as localsystem (am I right?). So the question is why do the files not copy on startup? Could it be because of: Is it permissions of the local system user? Reading the registry is problematic on startup? Obtaining files from the AD netlogon folder is problematic on startup? Am I missing it completely? My test machine does have the registry key and local directories as described in the script. I myself have standard user permissions on the test machine. AD server is Windows 2008, test client is Windows XP SP3 (and soon to be Windows 7, which I assume permissions issues will be inevitable) Dim wShell, fso, oraHome, tnsHome, key, srcDir Set wShell = WScript.CreateObject("WScript.Shell") Set fso = CreateObject("Scripting.FileSystemObject") key = "HKLM\Software\Oracle\Oracle_Home" On Error Resume Next orahome = wShell.RegRead(key) If err.Number = 0 Then tnsHome = oraHome + "\" + "network\admin\" srcDir = wShell.ExpandEnvironmentStrings("%logonserver%") + "\netlogon\UpdatedFiles\" fso.CopyFile srcDir + "file1.ext", tnsHome, true End If Side note: To ensure that the script is properly deployed, I purposely put some errors in the script, and on the next startup the error message appeared. So I know the GPO is deployed properly.

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• How to use a common library of environment variables among different languages?

  - by JDS

  We have three main languages with which we perform system tasks: Bash, Ruby, and PHP, and Perl. Four, four main languages. We use managed environment variables to provide authorization info that automated scripts need. For example, a mysql user account and password. We'd like to use one single managed file to maintain these variables. In some instances, for example, in cron, these environment variables are not available. They are made available in CLI scripts because we source the env file in everyone's profile. But something like cron doesn't do that. On the CLI, when the env file is sourced, any given script can access those variables. Bash has them directly, PHP in $_ENV, ruby in ENV, etc. We can't source the file into non-Bash scripts, because most languages implement shell commands by running them in a subshell. We considered parsing the Bash, converting to the script's lang, and running the equivalent of "exec(parsed_output)" on the resulting strings. What is a good solution to providing managed environment vars to scripts running in cron, or similar?

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• Hearing a clicking noise from soundcard all the time

  - by Mehrdad

  I have installed Fedora 17 on my laptop. A few days ago I updated my fedora (but not upgraded). I shut down my computer and since the next time I turned it on I am hearing a clicking noise all the time from speakers. Even when I plug my headphones in I hear the noise through the headphone. I surfed over the internet and found the following shell commands: su -c 'echo "options snd_hda_intel power_save=0" /etc/modprobe.d/snd_hda_intel.conf' su -c 'echo 0 /sys/module/snd_hda_intel/parameters/power_save' I tried them but they didn't work. Here is the part of "lspci" command related to my sound-card: 00:1b.0 Audio device: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) High Definition Audio Controller (rev 03) I have to add that my sound-card is working and I can play some audio file, I mean I can hear the voice and noise simultaneously. But everything is OK in windows xp which is also installed on my laptop. Could it be related to the sound-card driver? If so, how can I revert it to the previous version?

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• How to setup the Mac OS X Terminal so it's *just peachy*?

  - by kch

  Hi all, My Terminal is awesome, has every detail just right (for me anyway), and now I'm setting up a few new macs around here and I have no idea whatsoever how to get their terminals to a pretty state. My user account is rather old, has been migrated over many OS X releases and machines, so my Terminal setup has grown rather organically over the years. What I need is a recipe to start from scratch, so 1) I know what I've done, and 2) I can reproduce it anywhere. Things I'm looking for: Full UTF8 support. Setting LC_*, displaying characters correctly, accepting input… I hear this got much easier in 10.5, maybe it all works out of the box now? Setup of OS X-style keyboard text navigation (option-arrows, etc) How you particularly handle meta-key support? (other than ESC'ing your way around) Other things to help our n00bs get around in the shell, such as: List of useful default key bindings (^A, ^D, etc…) Mac-specific .profile, .inputrc goodness Mac-specific tools such as pbpaste & pbcopy, Open Terminal Here, etc If at all possible, a list of files to copy over to another machine that encompasses all the changes made to tune the Terminal. (dotrc files, plists, etc) And, well, anything else really. Just keep the scope on the Mac OS X Terminal application, rather than general unix setup and tools. I think a collection of incomplete answers would be a good start. Post one or two things you remember having done, we'll vote them up, and after a few days I'll try to compile it all into a summary answer.

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• Linux security: The dangers of executing malignant code as a standard user

  - by AndreasT

  Slipping some (non-root) user a piece of malignant code that he or she executes might be considered as one of the highest security breaches possible. (The only higher I can see is actually accessing the root user) What can an attacker effectively do when he/she gets a standard, (let's say a normal Ubuntu user) to execute code? Where would an attacker go from there? What would that piece of code do? Let's say that the user is not stupid enough to be lured into entering the root/sudo password into a form/program she doesn't know. Only software from trusted sources is installed. The way I see it there is not really much one could do, is there? Addition: I partially ask this because I am thinking of granting some people shell (non-root) access to my server. They should be able to have normal access to programs. I want them to be able to compile programs with gcc. So there will definitely be arbitrary code run in user-space...

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• Persistent PuTTY sessions for multiple windows

  - by Tgr

  I'm working in various Linux environments through PuTTY connections which break from time to time. I'm looking for a solution to make the PuTTY windows persist (e.g. if I was editing a file, then after reconnecting I should be in the same editor with the same file open at the same place), with the following requirements: it shouldn't require any manual setup at the beginning of the session or after reconnection (I don't want to type in screen or anything like that) I have several windows open to the same machine with the same user, which tend to disconnect at the same time the number/role of windows is not constant (it's not like I have an mc window, a mysql window and a "script runner" window; sometimes I use one window for search or for SVN commands, other times I need several at the same time) sometimes I need to change the properties of the windows for a task (large window for grepping/editing, small windows because I need to see two of them at the same time, red background because I am modifying the live database in MySQL etc), so I need to get the same console back in the same window after a reconnect Is there a way to achieve this? I suppose I should use screen or something equivalent, but how does it know which window I am reconnecting from? Is there some way to pass a unique window identifier to the shell from PuTTY?

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• Mapped network drive missing from My Computer and Explorer

  - by matt wilkie

  On a Windows XP Pro SP3 machine one network drive refuses to show up in My Computer or Explorer. The missing drive letter is G:, if that matters. Other mappings work fine. Other profiles one the same machine have no problem mapping G:. I can access the G: just fine typing it into the address bar or in CMD shell. I've used TweakUI to toggle hide/show G: with no difference. TweakUI says G: should be visible. I've logged off,on between toggles to make sure the settings are taking effect. I've looked at reg key [HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer] and made sure it's zero'd. [insert ref link here] We've limped along with this broken setup for some time, just working around it, but some applications do not allow typing in a path when choosing a place to save files and it's reached the point where it's intolerable. So, anyone have any idea why XP won't show this drive letter? or how to fix it?

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• Crond offset five minute schedule

  - by sam

  Is it possible to offset a cron script set to run every 5 minutes? I have two scripts, script 1 collects some data from one database and inserts it into another, script 2 pulls out this data and a lot of other data and creates some pretty reports from it. Both scripts need to run every 5 minutes. I want to offset script 2 by one minute so that it can create a report from the new data. E.G. I want script one to run at :00, :05, :10, :15 [...] and script two to run at :01, :06, :11, :16 [...] every hour. The scripts are not dependent on each other, and script 2 must run regardless of whether script one was successful or not. But it would be useful if the reports could have hte latest data. Is this possible with cron? Post; I have thought about using both commands in a shell script so they run immediately after each other but this wouldn't work, sometimes script 1 can get hung up on waiting for external APIs etc. so might take up to 15 mins to run, but script 2 must run every 5 minutes so doing it this way would stop/delay the execution of script 2. If I could set this in Cron it would mean script 2 would run regardless of what script 1 was doing

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• CentOS 5.8 - Can't login to tty1 as root after updates?

  - by slashp

  I've ran a yum update on my CentOS 5.8 box and now I am unable to log into the console as root. Basically what happens is I receive the login prompt, enter the correct username and password, and am immediately spit back to the login prompt. If I enter an incorrect password, I am told the password is incorrect, therefore I know that I am using the proper credentials. The only log I can seem to find of what's going on is /var/log/secure which simply contains: 15:33:41 centosbox login: pam_unix(login:session): session opened for user root by (uid=0) 15:33:41 centosbox login: ROOT LOGIN ON tty1 15:33:42 centosbox login: pam_unix(login:session): session closed for user root The shell is never spawned. I've checked my inittab which looks like so: 1:2345:respawn:/sbin/mingetty tty1 2:2345:respawn:/sbin/mingetty tty2 3:2345:respawn:/sbin/mingetty tty3 4:2345:respawn:/sbin/mingetty tty4 5:2345:respawn:/sbin/mingetty tty5 6:2345:respawn:/sbin/mingetty tty6 And my /etc/passwd which properly has bash listed for my root user: root:x:0:0:root:/root:/bin/bash As well as permissions on /tmp (1777) & /root (750). I've attempted re-installing bash, pam, and mingetty to no avail, and confirmed /bin/login exists. Any thoughts would be greatly appreciated. Thanks!! -slashp

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