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• E: Internal Error, Could not perform immediate configuration (2) on libattr1 ? in Ubuntu

  I am working with Ubuntu latest version. While installing via apt-get install i tried to abort that by pressing Ctrl+Z. It terminate successfully ;). But next time when i tried to use apt-get, i got some error "lock" and "temporally unavailable" something like that and **I unfortunately i delete the /var/lib/dkpg folder.** after that i cant install anything from apt-get, getting an error. E: Internal Error, Could not perform immediate configuration (2) on libattr1 so how can i solve this issue?

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• Why is reading from my lvm mirror slower than reading from the individual disks?

  - by smoofra

  Is this really just the way lvm is, or am i doing something wrong?

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• Snort monitoring of spanning interface

  - by aHunter

  I have configured a Cisco 3500 switch with a port SPAN and have my snort node (fedora 13) plugged into it. I am running snort as a daemon and have configured a rule to log all tcp traffic but I am only seeing traffic with a destination of the snort node. I know that the SPAN port is working and wanted to know if there is a specific option that I needed to start snort with in order for it to pickup all the traffic? Or is there something that I have missed here? Many thanks.

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• Setting differing ACLs on directories and files

  - by durandal

  Quick ACL question: I want to set up default permissions for a file share so that everyone can rwx all of the directories and so that all newly created files are rw. Everyone who is accessing this share is in the same group, so this isn't a concern. I have looked at doing this via ACLs without changing all of the users' umasks and such. Here are my current invocations: setfacl -Rdm g:mygroup:rwx share_name setfacl -Rm g:mygroup:rwx share_name My problem is that while I want all of the newly created sub-directories to be rwx, I only want newly created files to be rw. Does anyone have a better method to achieve my desired end-result? Is there some way to set ACLs on directories separately from files, in a similar vein to "chmod +x" vs. "chmod +X"? Thanks

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• Does Gedit have cool keyboard shortcuts?

  - by Kelp

  I have used Vim before and I love the keyboard shortcuts, but I hate having to copy and paste, so I am looking for a text editor that makes it easier. I have been trying Gedit. It's cool. But I really miss the being to create a new line, going to the end of the line, going to the beginning of the line, deleting a line with keyboard shortcuts. I tried to look up "gedit keyboard shortcuts" but all it came up with was how to save a file. Basic things.

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• Apache downloads php files instead of running their source

  - by Devils Child

  I have just recently upgraded PHP 5.3 to 5.4 on my Debian Squeeze server. Now, instead of executing PHP files, Apache just downloads them, which is really bad. When I try to follow these steps, I get "broken packages" upon installing the libapache2-mod-php5 package. Also the answer tells me to add something to my httpd.conf, but it's empty. Question: How can I make apache execute php files again, instead of just passing them through as download? dpkg -l | grep php returns this rc libapache2-mod-php5 5.3.3-7+squeeze15 server-side, HTML-embedded scripting language (Apache 2 module) rc php5-cli 5.3.3-7+squeeze15 command-line interpreter for the php5 scripting language ii php5-common 5.4.15-1~dotdeb.2 Common files for packages built from the php5 source rc php5-gd 5.3.3-7+squeeze15 GD module for php5 rc php5-mcrypt 5.3.3-7+squeeze15 MCrypt module for php5 rc php5-mysql 5.3.3-7+squeeze15 MySQL module for php5 rc php5-suhosin 0.9.32.1-1 advanced protection module for php5 rc phpmyadmin 4:3.3.7-7 MySQL web administration tool And apt-get install libapache2-mod-php5 produces this error The following packages have unmet dependencies: libapache2-mod-php5 : Depends: libdb5.1 but it is not installable Depends: libssl1.0.0 (>= 1.0.0) but it is not installable Depends: libxml2 (>= 2.8.0) but 2.7.8.dfsg-2+squeeze7 is to be installed Recommends: php5-cli but it is not going to be installed E: Broken packages

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• VPS with multiple domains, can EXIM send mail from a different domain?

  - by Mike L.

  I building a site for a client on a VPS running CentOS 5.5 with cPanel WMH 11.28.60. The original domain is XXXXXinvestmenttrust.com. He has about a dozen domains on this server. The site I am building will have confirmation emails as well as provide users to anonymize their email address (like craigslist) I set up email piping to forward emails, but they are all being trapped in the spam folder. A close look at the headers, the emails appear to be comming from [email protected] rather than the actual domain. The IP has a rating of Neutral on www.senderbase.com. I believe it is the conflicting information in the header (the fields set by me, specify the actual domain where the headers put in place by EXIM specify to name of the server) Somewhere I read about SPF & MX entries can fix this, but I have been unable to figure out how. Also, All of the domains use the same IP, and the other websites do not send emails. So I could possibly make the domain in question, the primary (where all emails are sent from that domain by default) Is that possible?

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• Rearrange content of a file

  - by VikJES

  I'd like to rearrange the content of a file on a per line basis (see below), ideally without using Perl or Python (I'm not allowed to... Don't ask.) The input file contains unordered header lines and lines with backup operation results. The output files should contain the lines ordered as shown below. Original file: Completed Backups Backups with Warnings Failed Backups Server A backup was completed with warnings Server B backup was successful Server C backup failed Server D backup was completed with warnings End result: Completed Backups Server B backup was successful Backups with Warnings Server A backup was completed with warnings Server D backup was completed with warnings Failed Backups Server C backup failed

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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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• How to use the date command

  - by SCNCN2010

  How to use the date command to display, for example, 10-Mar-2010 01:01:53? What's the format string?

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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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• iptables, forward traffic for ip not active on the host itself

  - by gucki

  I have kvm guest which's netword card is conntected to the host using a tap device. The tap device is part of a bridge on the host together with eth0 so it can access the public network. So far everything works, the guest can access the public network and it can be accessed from the public network. Now the kvm process on the host provides a vnc server for the guest which listens on 127.0.0.1:5901 on the host. Is there any way to make this vnc server accessible by the ip address which the guest is using (ex. 192.168.0.249), without interrupting the guest from using the same ip (port 5901 is not used by the guest)? It should also work when the guest is not using any ip address at all. So basically I just want to fake IP xx is on the host and only answer/ forward traffic to port 5901 to the host itself. I tried using this NAT rule on the host, but it doesn't work. Ip forwarding is enabled at the host. iptables -t nat -A PREROUTING -p tcp --dst 192.168.0.249 --dport 5901 -j DNAT --to-destination 127.0.0.1:5901 I assume this is because the IP 192.168.0.249 is not not bound to any interfaces and so no ARP requests for it get answered and so no packets for this IP arrive at the host. How can make it work? :)

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• Backing up 80G hard drive 1G per day

  - by barrycarter

  I want to securely backup my 80G HD, but doing a complete backup takes forever and slows down my machine, so I want to backup just 1G per day. Details: % First hurdle: on the first day, I want to backup the "first" 1G of the hard drive. Of course, there really is no "first" 1G on a hard drive. % After 80 days, I'll have my whole HD backed up... assuming none of my files ever change, which of course they do. So the backup plan/program must also catch file creation/changes as they come along. % The backups must be consistent, in that I can restore my system by restoring the backups sequentially. In other words, "dd if=/harddrive" probably won't work. % The backups should encrypt file contents AND names, but I don't see this as a major hurdle. % Once the backup has backed up everything (even changed files), it can re-backup the first 1G on my hard drive. Even though this backup is redundant, that's OK, because I always want to be backing up something (eg, if I'm backing up to optical media, the older media might start going corrupt). Is there a magic backup plan/program that does this? In reality, I want to do this for multiple machines with multiple drives each, but think that solving the above will solve the general case.

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• Server load increases by lot of httpd request with same PID

  - by user3740955

  I can see that my server load increases to more than 200-300 range. Before 1 week the maximum load was around 20-25. In top and ps -ef i can see a lot of httpd threads and the PPID of most of the httpd request are of the same PID. When i verified this the parent process ID is of root. Please let me know how i can reduce the server load. I have searched a lot for this but not able to find out a proper solution for this. Please let me know. Please see below a part of the top output. apache 29698 2062 1 16:54 ? 00:00:00 /usr/sbin/httpd apache 29700 2062 3 16:54 ? 00:00:00 /usr/sbin/httpd apache 29701 2062 10 16:54 ? 00:00:02 /usr/sbin/httpd apache 29702 2062 0 16:54 ? 00:00:00 /usr/sbin/httpd apache 29703 2062 1 16:54 ? 00:00:00 /usr/sbin/httpd apache 29705 2062 0 16:54 ? 00:00:00 /usr/sbin/httpd apache 29706 2062 3 16:54 ? 00:00:00 /usr/sbin/httpd apache 29707 2062 0 16:54 ? 00:00:00 /usr/sbin/httpd apache 29708 2062 1 16:54 ? 00:00:00 /usr/sbin/httpd apache 29709 2062 0 16:54 ? 00:00:00 /usr/sbin/httpd apache 29710 2062 0 16:54 ? 00:00:00 /usr/sbin/httpd apache 29711 2062 0 16:54 ? 00:00:00 /usr/sbin/httpd apache 29712 2062 0 16:54 ? 00:00:00 /usr/sbin/httpd Server version: Apache/2.2.3

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• yum security update - message indicating kernel version not up to date

  - by JMC

  Running yum --security check-update returns this message: Security: kernel-3.x.x-x.63 is an installed security update Security: kernel-3.x.x-x.29 is the currently running version I already ran the yum security update on the kernel, but it looks like it didn't change the version running on the system. What needs to be done to make it run the new kernel? Are there any concerns about why it didn't change during the installation process? The yum log just shows installed for the new kernel no error messages.

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• Website & Forum sharing the same login credentials ?

  - by Brian

  I am going to be running a small site (100 hits a week maybe) and I am looking for a quick and easy way to share login information between the main website, a control panel (webmin, cpanel, or something), and the forum. One login needed to access any of the three. The website won't have use for the login, per say. But it will display "logged in" when you are on the website. Any custom solutions, any thoughts, logic, examples?

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• Why should I use a puppet parametrized class?

  - by robbyt

  Generally when working with complex puppet modules, I will set variables at the node level or inside a class. e.g., node 'foo.com' { $file_owner = "larry" include bar } class bar { $file_name = "larry.txt" include do_stuff } class do_stuff { file { $file_name: ensure => file, owner => $file_owner, } } How/when/why does parametrized classes help when this situation? How are you using parametrized classes to structure your puppet modules?

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• Using Plesk to setup MySQL

  - by chris

  Having trouble getting my mysql up and running on a new virtual server. The host gave me Plesk and I think MySQL is installed but I can't seem to access it. I keep getting this: mysql -u admin -p Enter password: ERROR 1045 (28000): Access denied for user 'admin'@'localhost' (using password: YES) How do I make sure its running properly? How do I reset the root password? (I have root access to the server)

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• Distributed filesystem across a slow link

  - by Jeff Ferland

  I have an image in my head where a link is too slow to realize the real-time transfer of files, but fast enough to catch up every day. What I'd like to see is a master <- master setup where when I write a file to Server A, the metadata will transfer to Server B immediately and the file will transfer at idle or immediately when Server B's client tries to read the file before Server A has sent it. It seems that there are many filesystems which can perform well over fast links, but I don't know of any that do well with a big bottle neck and a few hours of latency.

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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 format pendrive from fat32 to ext3 in windows7

  - by newb

  I am trying to make a live usb of OPHCRACK and tried to boot from FAT32 pendrive. But after making live usb and boot from it the ophcrack didnt work. After searching a while i came to understand that ophcrack will not work in a fat32 pendrive and we have to convert it into ext3. But i am getting hard time finding a method or software which can be used to convert fat32 pendrive to ext3 in windows 7. Can you suggest any method or software's for this purpose

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• Ping not working

  - by Nishant

  Ping is not working to and from this IP to my computer. inet addr:10.125.104.4 Bcast:10.125.111.255 Mask:255.255.240.0 My computer is like this Ethernet adapter Local Area Connection: Connection-specific DNS Suffix . : IP Address. . . . . . . . . . . . : 10.125.65.75 Subnet Mask . . . . . . . . . . . : 255.255.252.0 Default Gateway . . . . . . . . . : 10.125.64.6 We both CAN reach the common gateway IP , 10.125.96.6 . What should I check ? What is the barrier in sending info if we both have a common gateway that is pingable ? Besides I can login to a intermediate server and ssh to this server also !!

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• What sysadmin must do to run OS with damaged /lib/libc.so file ? / rsyslogd daemon logrotation / deny checking list of running processes

  - by Virtual_Lotos

  What sysadmin must do to run OS with damaged /lib/libc.so file ? In other words, how command interpreter should be configured to be able to run system with corrupted /lib/libc.so file ? Do I have to move it to /var catalog ? Does the command interpreter must be statically compiled or have setuid attribute or perhaps must be a symbolic link to /bin/sh or must be no larger than 2MB ? How to prevent a user from checking list of processes started by another user ? How do I forbid a user to see which processes are running by another user ? What do I have to keep in mind when I want to make rsyslogd daemon logrotation ?

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• Auto restart server if virtual memory is too low

  - by Sukhjinder Singh

  There are quite number of software running on my server: httpd, varnish, mysql, memcache, java.. Each of them is using a part of the virtual memory and varnish was configured to be allocated 3GB of memory to run. Due to high traffic load which is 100K, our server ran out of memory and oom-killer is invoked. We've to reboot the server. We have 8GB of Virtual Memory and due to some reason we cannot extend to larger memory. My question is - Is there any automated script, which will monitor how much virtual memory left and based upon certain criteria, lets say if 500MB left than restart the server automatically? I do know this is not the proper solution but we have to do it, otherwise we don't know when server will get OOM and by the time we know and restart the server, we lost our visiting users.

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• How do I set it so that everyone uses the /bin/bash shell ?

  - by Alex

  It doesn't seem to work for some reason if I do this in /etc/profile: export SHELL="/bin/bash/"

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