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  • how to properly edit hosts, hostname and resolf.conf? [migrated]

    - by Firewall
    i,v been searching the internet for a real noop tutorial on the subject but could not found any direct info. on how to edit these files the proper way. i,v got a debian internet server that i use to host some personal domains and runs squid and rTorrent. the server is up and running with no problems but i am confused about a few things. lets say that i named my server (foo), my domain is (example.com) and my public IP is 95.211.133.200 now: should /etc/hostname contains: tango.example.com or tango <----- just the server name should /etc/hosts contains: 127.0.0.1 localhost.localdomain localhost 95.211.133.200 foo.example.com foo should /etc/resolf.conf contains (along with the nameservers) both: domain example.com search example.com or just the first one. are there any other files that i should edit in order to make things right? last thing, the command: domainname returns: (none) i believe it should return (example.com). what should i do to correct that?

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  • How to get a list of Dovecot IMAP users

    - by Colt McCormack
    How do you get a list of users for a dovecot email server that connect via IMAP (as opposed to POP)? Our server is setup to authenticate via LDAP/PAM. Is there an easy way to get a list of the users who are accessing their mail via IMAP, rather than POP? I am about to migrate our server to Google Apps and want to migrate all of the mail for my IMAP users only (couple hundred out of several hundred total users). POP mail will be migrated separately from the client end obviously. I would much rather migrate only the IMAP users rather than the whole domain which would include migrating a bunch of POP mail left in the server that has already been read/sorted/deleted in the client's email program. Migrating all of that extra useless leftover POP mail could waste weeks of migration time. I suppose parsing some logs to see who has connected on an IMAP port (995 or 993) would give me a list would work if someone could help me do that. I know I have the raw dovecot logs, but am hoping for a cleaner solution.

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  • mutt isn't sending large messages

    - by Guy
    I'm using mutt in the following way: echo <MESSAGE> | mutt -s <SUBJECT> -- <TO-ADDR> This usually works when I try small message (messages with ~10 lines in the body). But when trying very large message (a message with ~200 lines) the email just isn't received. Any ideas?

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  • solution for an offline server

    - by dashmug
    I'm trying to setup a development server at work that will ideally be able to test drive a couple of projects in PHP, Rails, or Django (not always running at the same time). I develop the apps locally on a Mac and then I'll put the projects up on this server for testing with my actual users (non-techies) before deploying to a production server. My problem is that we have a very poor internet connection (almost negligible) at work and doing the usual apt-get/yum/ports (make, clean, install) processes for setting up servers always get their packages from online repositories somewhere. I know I could probably download the source and then compile them myself but that's going to be too much of a hassle for me. I'm thinking about two solutions: Plan A: Run a server VM on my Mac and then use this VM as the source repository for the offline server. I've read about Ubuntu's apt-proxy and it seems to be good enough though I haven't tried it yet. I'm not sure if this is possible but can I simply do apt-get install nginx --downloadonly so that the package and its dependencies will be downloaded into my VM and my server can use the VM as the source repo for apt-get? Plan B: Run a server VM on my Mac (which I can setup/update easily when I'm home) and then clone the VM to the offline development server. Maybe I should simply make the server a VM host so I can simply copy the VM over. I think this is okay for the first-time setup but subsequent updates will take too long (cloning the VM image). If I was working on Windows, I imagine it'd be easier because most services have an installer file that I can download and then run at the server. If you could suggest another way, it would be much appreciated. Update: From Michael Hampton's answer, I found a possible solution which is apt-cacher. I also found this page on Ubuntu's website. I wonder if there is a better tool than this one.

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  • Raid1+0: create stripe over two /dev/mdx on partition or not?

    - by Chris
    Given that I haven't found a way to define how a Raid10 is created with mdadm, i went the Raid1+0 solution. How to display/define Mirror/Stripping pairs with mdadm mdadm --create /dev/md0 --level=1 --raid-devices=2 /dev/sda1 /dev/sdf1 mdadm --create /dev/md1 --level=1 --raid-devices=2 /dev/sdg1 /dev/sdh1 mdadm --create /dev/md10 --level=0 --raid-devices=2 /dev/md0 /dev/md1 My question is about the stripe. For the mirror I create a primary partition over the full HD and set partition type to FD. So, should I do the same for the Stripe? Create partition on /dev/md0 and /dev/md1 (primary over full 'HDD', set partition type correctly) and then do the stripe on the partition? Is there a correct way here or are there any advantages/disadvantages to a solution? Thank you

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  • Constructor and Destructor of a singleton object called twice

    - by Bikram990
    I'm facing a problem in singleton object in c++. Here is the explanation: Problem info: I have a 4 shared libraries (say libA.so, libB.so, libC.so, libD.so) and 2 executable binary files each using one another shared library( say libE.so) which deals with files. The purpose of libE.so is to write data into a file and if the executable restarts or size of file exceeds a certain limit it is zipped and a new file is created with time stamp in name. It is using singleton object. It exports a handler class for getting and using singleton. Compressing only happens in the above said two cases. The user/loader executable can specify the starting name of file only no other control is provided by handler class. libA.so, libB.so, libC.so and libD.so have almost same behavior. They all have a class and declare and object of an handler which gets the instance of the singleton in libE.so and uses it for further purpose. All these libraries are linked to two executable binary files. If only one of the two executable runs then its fine, But if both executable runs one after other then the file of the first started executable gets compressed. Debug info: The constructor and destructor of the singleton object is called twice.(for each executable) The object of singleton is a static object and never deleted. The executable is not able to exit/return gives: glibc detected * (exe1 or exe2): double free or corruption (!prev): some_addr * Running with binaries valgrind gives that the above error is due to the destructor of the singleton object. Thanks

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  • Open application in background without losing current window focus. Fedora 17, Gnome 3

    - by Ishan
    I'm running a script in the background which loads an image with feh depending on which application is currently in focus. However, whenever the script opens the image, window focus is lost to feh. I was able to circumvent this by using xdotool to switch back to the application that was originally in focus, but this introduces a short annoying period of time where the focus is switched from feh to the application. My question is this: is there any way to launch feh in the background such that window focus is NOT lost? System: Fedora 17, Gnome 3, Bash Thanks a ton!

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  • How to auto detect text file encoding?

    - by ???
    There are many plain text files which were encoded in variant charsets. I want to convert them all to UTF-8, but before running iconv, I need to know its original encoding. Most browsers have an Auto Detect option in encodings, however, I can't check those text files one by one because there are too many. Only having known the original encoding, I then can convert the texts by iconv -f DETECTED_CHARSET -t utf-8. Is there any utility to detect the encoding of plain text files? It doesn't have to be a 100% perfect correct, but it should recognize most of them.

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  • CPU/RAM usage log over a period of time to file on CentOS

    - by joel_gil
    Hi everyone Im looking for an app pr line of code that could let me observe a process, save the info in a number of variable and then put the gathered info on a file. Ive been trying with variations of top but no luck. I am running several CentOS virtual servers, VM is 2gb ram 2 processor. Maybe a script that works over a specified amount of time while writing lines with the info on a text file so at the end i can have a sort of table with the data. The thing is Im going to stress test the server and I would like to have the data to make some statistics. Any comments and suggestions are most welcome.

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  • Xorg fails to start under Ubuntu

    - by den-javamaniac
    I'm running desktop Ubuntu 9.10 on my Dell laptop. Previously it was Ubuntu 9.04. After some period of time (lets say 3-4 months) my X fails to start automatically after some restart calls. If that takes place my network manager applet doesn't start either (after I do startx). Can any one point out what I'm missing/what's the problem? EDDITED I get a perfect server boot meaning there's no Xorg started. Command line interface is all I get starting from login and further.

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  • Xorg fails to start under Ubuntu

    - by den-javamaniac
    I'm running desktop Ubuntu 9.10 on my Dell laptop. Previously it was Ubuntu 9.04. After some period of time (lets say 3-4 months) my X fails to start automatically after some restart calls. If that takes place my network manager applet doesn't start either (after I do startx). Can any one point out what I'm missing/what's the problem? EDDITED I get a perfect server boot meaning there's no Xorg started. Command line interface is all I get starting from login and further.

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  • Is Ubuntu 10.04 suitable for working on for web development

    - by wombart
    Hi everyone, Im just wondering what everyone's experiences are with the latest Ubuntu 10.04 version? Is it stable enough for a working environment? I require it for web development, so using VMs, IDEs, connecting to VPNs, SSH to servers, etc. Im currently using 9.04 and found 9.10 unstable and problematic at times (such as problems connecting to VPN) Any input would be appreciated, thanks!

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  • How can I make zsh completion behave like Bash completion?

    - by Nate
    I switched to zsh, but I dislike the completion. If I have 20 files, each with a shared prefix, on pressing tab, zsh will fully complete the first file, then continue going through the list with each press of tab. If I want one near the end, I would have to press tab many times. In bash, this was simple - press tab and I would get the prefix. If I continued typing (and pressing tab), bash would complete as far as it could be certain of. I find this behavior to be much more intuitive but prefer the other features of zsh to bash. Is there a way to get this style of completion? Google suggested setopt bash_autolist, but this had no effect for me (and no error message was printed upon starting my shell). Thanks.

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  • Strange filesystem behavior, Ubuntu 9

    - by Fixee
    I have two windows open on the same machine (Ubuntu 9, ia32, server). I'll call these windows W1 and W2. W1: $ cd ~/test $ ls sample $ In W2 I run "make" from a parent directory that recreates file test/sample: $ make project . . $ cd test $ ls sample $ Now, returning to W1: $ ls $ cd ../test $ ls sample $ In other words, after I build from another window and the file test/sample is replaced, ls shows the file as missing in the 2nd window until I cd ../test back into the directory whereupon it reappears. I can give more details if required, but just wondering if this is a well-known behavior.

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  • I wrote a new X11 keyboard layout file, how do I get my system to recognize it?

    - by grimborg
    I like to configure my keys my way, so I wrote a keyboard symbols file and I put it in /usr/share/X11/xkb/symbols/cat I use it by running setxkbmap cat -variant dvorak (and it works), but it doesn't show up in the console configuration (dpkg-reconfigure console-setup) nor in the Gnome keyboard settings... nor anywhere else, so I have to run setxkbmap every time. I suppose that I have to register it somewhere, but where? Any hints? Thanks!

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  • Hard Reset USB in Ubuntu 10.04

    - by Cory
    I have a USB device (a modem) that is really finicky. Sometimes it works fine, but other times it refuses to connect. The only solution I have found to fix it once it gets into a bad state is to physically unplug the device and plug it back in. However, I don't always have physical access to the machine it is plugged in on, so I'm looking for a way to do this through the command line. This post suggests running: $ sudo modprobe -w -r usb_storage; sudo modprobe usb_storage However I get an "unknown option -w" output. This slightly modified command: $ sudo modprobe -r usb_storage Fails with the message FATAL: Module usb_storage is in use. If I try to kill -9 the processes marked [usb-storage] before running they refuse to die (I think because they are deeply tied to the kernel). Anyone know of a way to do this? NOTE: I cross-posted this on serverfault as I didn't know which was more appropriate. I will delete and/or link whichever one is answered first.

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  • Regex working in RedHat is not giving any result in Ubuntu

    - by Supratik
    My goal is to match specific files from specific sub directories. I have the following folder structure `-- data |-- a |-- a.txt |-- b |-- b.txt |-- c |-- c.txt |-- d |-- d.txt |-- e |-- e.txt |-- org-1 | |-- a.org | |-- b.org | |-- org.txt | |-- user-0 | | |-- a.txt | | |-- b.txt I am trying to list the files only inside the data directory. I am able to get the correct result using the following command in RHEL find ./testdir/ -iwholename "*/data/[!/].txt" a.txt b.txt c.txt d.txt e.txt If I run the same command in Ubuntu it is not working. Can anyone please tell me why it is not working in Ubuntu ?

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  • How to retry connections with wget?

    - by Andrei
    I have a very unstable internet connection, and sometimes have to download files as large as 200 MB. The problem is that the speed frequently drops and sits at --, -K/s and the process remains alive. I thought just to send some KILL signals to the process, but as I read in the wget manual about signals it doesn't help. How can I force wget to reinitialize itself and pick the download up where it left off after the connection drops and comes back up again? I would like to leave wget running, and when I come back, I want to see it downloading, and not waiting with speed --,-K/s.

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  • Running JBoss 6 with Runit / daemontools or other process supervision framework

    - by Alex Recarey
    I'm tying to use runit to daemonize JBoss. I use the /opt/jboss-6.1.0.Final/bin/run.sh script to start the server. When I do so from the comandline, JBoss does not detach (which is what we want), and will also shut down when CTRL+C is pressed. In theory a perfect candidate to use runit on. Everything works fine except when I try to get runit to shut down JBoss. When I issue the command sv stop jboss nothing happens. Runit thinks the process is stopped but jboss continues to run normally. I'm not doing anything special with the run script. This is my runit run script: #!/bin/sh exec 2>&1 exec /opt/jboss-6.1.0.Final/bin/run.sh -c standard -b 0.0.0.0 Looking at the jboss_init_redhat.sh script, the start section does mention ./bin/run.sh but the stop section has the following text: JBOSS_CMD_STOP=${JBOSS_CMD_STOP:-"java -classpath $JBOSSCP org.jboss.Shutdown --shutdown"} Any ideas of what I could try?

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  • Can't create LVM due to: not found (or ignored by filtering)

    - by James
    I'm planning to use LVM for KVM, and when I try to create a VG it fails, so how can I create my VG and LV ? Thanks [root@server ~]# vgcreate virtual-machines /dev/sda Device /dev/sda not found (or ignored by filtering). Unable to add physical volume '/dev/sda' to volume group 'virtual-machines'. [root@server ~]# df -h Filesystem Size Used Avail Use% Mounted on /dev/sda3 2.0T 929G 976G 49% / tmpfs 3.9G 124K 3.9G 1% /dev/shm /dev/sda1 194M 57M 128M 31% /boot [root@server ~]# pvscan No matching physical volumes found

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  • Apache on Ubuntu very slow on inital calls, very fast afterwards

    - by papakost
    I own an Ubuntu 10 VPS Server with Apache 2 hosting a Magento website. The first hit to the site from any client takes about 15-20 sec, while the subsequent hits from the same client take 0-1 sec. I suppose it doesn't have to do with Magento caching, because this happens also when the first call is on a very light page and the next calls are on heavy ones. Does anyone have an idea on what is going wrong here?

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