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UNIX: Find Out the Server Model
You can find out the model of a UNIX server using the following methods:rn rn Using the "uname" command: rn rn rn rn uname -arn rn rnThis command will display information about the system, including the machine hardware name. For example, the output might look something like this:rn rn rn Linux host
Debian Linux (Squeeze) Install Firefox 4
To install Firefox 4 on Debian Linux Squeeze, you can follow these steps:rn rn Add the Mozilla repositories: rn rn rn rn echo "deb http://mozilla.debian.net/ squeeze-backports iceweasel-release" | sudo tee /etc/apt/sources.list.d/iceweasel.listrn rn rn rn Import the repository signing key: rn rn rn
Gnome Volume Control: Disabled Sound Themes
If sound themes are disabled in Gnome Volume Control, it may be due to a few different reasons:rn rn Sound theme is not installed: Gnome Volume Control requires a sound theme to be installed in order to play sounds. If the sound theme is not installed, the option to enable sound themes may be disabl
Gnome Network Manager VPN Tab Disabled ( Greyed out )
If the VPN tab in Gnome Network Manager is greyed out or disabled, it could be due to a few different reasons:rn rn Gnome Network Manager VPN plugins are not installed: Gnome Network Manager requires specific VPN plugins to be installed in order to support different VPN protocols. If the VPN tab is
Linux Find Out CPU Architecture Information
You can find out the CPU architecture information on a Linux system using several methods. Here are a few: n n lscpu command: The lscpu command provides detailed information about the system’s CPU architecture. You can use it as follows: n n n n lscpu n n n This will display information such a
Linux: What is Dash ( /bin/dash ) Shell?
dash (short for Debian Almquist shell) is a Unix shell that is commonly used as the default /bin/sh interpreter on many Linux distributions, including Debian, Ubuntu, and some others. It is designed to be a lightweight, fast, and POSIX-compliant alternative to the traditional bash shell. dash is
Linux Command: Put Laptop / Netbook In Hibernate / Suspend Mode
You can put a Linux laptop or netbook in hibernate or suspend mode by using the systemctl command. To put the system in hibernate mode, run the following command as root or with sudo :rn rn rn systemctl hibernatern rn rnTo put the system in suspend mode, run the following command as root or with
Backtrack 5 KDE startx Failed To Load Error and Solution
The startx error message "Failed to load" in BackTrack 5 KDE is usually caused by a problem with the X Window System configuration. Here are a few solutions that you can try to resolve the issue:rn rn Check the X Window System configuration files: The X Window System configuration files are stored i
How To Find Out RHEL 6 / CentOS 6 Kernel Version
You can find the kernel version of a Red Hat Enterprise Linux 6 (RHEL 6) or CentOS 6 system by using the uname command with the -r option. The -r option displays the kernel release number. Here's an example:rn rn rn uname -rrn rn rnThis will output the kernel version number, for example:rn rn rn 2.6
Bash C Style For Loop Example and Syntax
In Bash, you can use the for loop to execute a set of commands a specified number of times. The "C-style" syntax of a for loop in Bash looks like this:rn rn rn for ((expression1; expression2; expression3))rn do rn commandsrn done rn rn rnHere's what each expression does:rn rn expression1 : initializ
Linux /boot: Out of Disk Space While Installing Package kernel-2.6.32-131.2.1.el6.x86_64
If you’re encountering an “out of disk space” error while installing the package kernel-2.6.32-131.2.1.el6.x86_64 in Linux, it means that the /boot partition does not have enough free space to accommodate the new kernel image. This can be resolved by removing some old, unused kerne
HowTo: Linux / Unix See File Size Command
In Linux or Unix, you can use the ls command with the -l option to see the file size of a file or directory. The file size is listed in the fifth column of the output. For example:rn rn rn ls -l <file_name>rn rn rnReplace <file_name> with the name of the file you want to check the size o
Linux Find Out Kernel Module (Device Driver) Version Number
To find out the version number of a kernel module or device driver in Linux, you can use the following command:rn rn rn modinfo < module_name > rn rn rnReplace <module_name> with the name of the module for which you want to see the version number. For example, to find the version number
Vim Open File And Go To Specific Function or Line Number
In Vim, you can open a file and go to a specific function or line number by using the following command:rn rn rn vim + rn rn rnFor example, if you want to open a file named "example.txt" and go to line number 50, the command would be:rn rn rn vim +50 example.txtrn rn rnIf you want to go to a specifi
RHEL / CentOS / Fedora: Verify GPG Key For Package Update
Verifying GPG keys is an important security measure to ensure that packages installed on your system are authentic and have not been tampered with. In Red Hat Enterprise Linux (RHEL), CentOS, and Fedora, you can verify the GPG key for a package update using the following steps: n n Import the GPG ke
RHEL Warning: RPMDB altered outside of yum
The "Warning: RPMDB altered outside of yum" message in RHEL (Red Hat Enterprise Linux) indicates that the RPM database, which is used by the yum package manager to keep track of installed packages, has been modified in a way that is not consistent with how yum updates it. This can happen if you manu
No xauth Program; Cannot Forward With Spoofing Error and Solution
The "No xauth program; cannot forward with spoofing" error message occurs when you are trying to use X forwarding over SSH and the xauth program is not installed or not found on the remote system. X forwarding allows you to run X applications on a remote system and display the output on your local s
How To: Linux Delete / Remove User Account Using userdel
You can use the userdel command to delete a user account on a Linux system. The userdel command is part of the shadow-utils package on many distributions, and it is used to manage user accounts and passwords. n Here’s how to use the userdel command to delete a user account: n n Log in as the r
Find the group name of the folder in UNIX / Linux
You can find the group name of a folder in Unix or Linux using the ls command with the -l option. The -l option displays the details of a file or folder, including its permissions, owner, group, size, and modification time. Here's an example:rn rn rn ls -l folder_namern rn rnOutput:rn rn rn drwxr
How To: Find Out KSH ( Korn Shell ) Version on Linux or Unix-like system
You can find out the version of the Korn shell (ksh) on a Linux or Unix-like system using the following command:rn rn rn ksh -c 'echo $KSH_VERSION' rn rn rnThis command runs a simple echo command in ksh, and uses the KSH_VERSION environment variable to print the version of the shell. Alternativel
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