I hope many of you will agree that sometimes it’s really good idea to have some small amount of RAM mounted as a filesystem. It may be necessary when running some bash or perl script that handles, say, thousands of small files so it’s much… Read More »Fastest way to create ramdisk in Ubuntu/Linux
Centos 5.5 official repository is rather outdated for today so the latest Ruby available there is 1.8.6. If you need a newer version e.g. 1.8.7 you should install if from sources: 0. Install prerequisites: sudo yum install gcc zlib zlib-devel 1. Download the latest version… Read More »Install Ruby 1.8.7 from sources in Centos 5.5
[digg-me]In this post I will collect all commands which SHOULD NEVER be executed in Linux. Any of them will cause data loss or corruption, can freeze or hang up running system. NEVER RUN THESE COMMANDS IN LINUX BOX CLI! Even if somebody advises you in… Read More »13 Linux lethal commands
Yesterday really serious security bug was found in FreeBSD (from 7.1 to 8.0). Using public exploit local user can gain root privileges on vulnerable system. Below is an easy way solution to fix this terrible bug: % cd /usr/src/libexec/rtld-elf/ % fetch http://people.freebsd.org/~cperciva/rtld.patch % cat rtld.patch… Read More »Quick fix of FreeBSD rtld vulnerability
Update: Using Ubuntu Lucid Lynx? Here is corresponding article for you: Install Google Chrome (Chromium) on Ubuntu Lucid Lynx. One of the easiest way to try Chromium browser in Ubuntu Linux (Google Chrome browser for Unix/Linux operating system is named as Chromium) is to use… Read More »Install Ubuntu Chromium browser (Google Chrome for Linux)
Want to sort file contents by each line’s lenght? No problems:
artemn@artemn-laptop:~$ cat /etc/passwd | awk '{print length, $0}' | sort -n | awk '{$1=""; print $0 }'
Sometimes it is necessary to check whether server you want to run some big bash script is connected to Internet. Usually it makes sense while running scripts periodically using cron. Below is the tiny bash script for this purpose: #!/bin/bash WGET=”/usr/bin/wget” $WGET -q –tries=10 –timeout=5… Read More »Tiny bash scripts: check Internet connection availability
Imagine the following situation: you have to compile some Linux/Unix application or kernel module that requires kernel source present at your hard drive, say, in /usr/src/kernels/kernel-2.6.21-i386/ or elsewhere. But there is not enough disk space to copy these sources or install kernel-devel or linux-source packages… Read More »Mount remote filesystem via ssh protocol using sshfs and fuse [Fedora/RedHat/Debian/Ubuntu way]
Ubuntu as any other Linux distribution comes with netfilter iptables as default firewall. This is one of the best firewall software for Unix family operating systems: it allows to perform various filtering operations and makes it possible to match packets using numerous ways starting from… Read More »Ubuntu Iptables Firewall: set of useful links
Few days ago I have upgraded my Ubuntu to latest 8.10 (Intrepid Ibex) and found that keyboard just doesn’t work in VMware Server Console. The problem was that I couldn’t use keyboard under guest operating system including Windows, Linux etc. After few hours of research I found simple solution which works for me:
$ setxkbmap
$ echo "xkeymap.nokeycodeMap = true" >> ~/.vmware/config
After this restart vmware-server-console and see if it helps. If not you can see other solutions of the same problem at this site:
http://nthrbldyblg.blogspot.com/2008/06/vmware-and-fubar-keyboard-effect.html
I hope it helps!
Read More »VMware server console keyboard problem in Ubuntu Intrepid Ibex