When it comes to file comparison, GUI based software are mostly used. If you are a Linux user then I think you should know how to compare two files through command line as it is definitely a quick method once [...]
LINUX COMMANDS
9 Linux Uname Command Examples to Get Operating System Details
Uname command is used to display basic information about the operating system and hardware. With options, Uname prints kernel details, and system architecture. Uname is the short name for 'UNIX name'. Uname command works on all Linux and Unix like [...]
How to Use YUM Command in Linux
Yum (Yellowdog Updater Modified) is a utility provided in RHEL based systems to install, remove and search packages. It can do a lot more than just installing and removing and that's what I will demonstrate in this tutorial. Yum installs [...]
How to List Installed RPM Packages on Linux
The rpm commands are used rpm based distros like CentOS, Fedora, Opensuse and RHEL. Modern Linux distros use yum and DNF package manager which has more features. This tutorial explains the options that can be added to the rpm command [...]
How to Check Memory Usage of Process with Linux pmap Command
The Linux pmap command displays the memory usage map of a process or multiple processes. Pmap reports information about the address space or memory usage map of a process. Pmap is actually a Sun OS command and Linux supports only very [...]
Chown Command in Linux (Change File Ownership)
In Linux and Unix-like operating systems, all files, directories and processes (which are again files) are owned by users. The group is a set of users that share the same access permissions (i.e read, write and execute) for that objects [...]
How to Change Permissions in Linux
On Linux and Unix, the security starts with file permissions. On a very basic level, file and directory permissions play a vital role in the security of a system. When you create a file or directory on Linux systems, it [...]
Sort Command in Linux with Examples
The sort command is used in Linux and Unix system to arrange the contents of the file in a specific order. Using sort command you order lines, alphabet and numeric in a file. Sort command has many useful options to [...]
How to Use Sed Command in Linux with Examples
SED abbreviated as 'Stream Editor' is a powerful text stream editor that can perform a lot of functions on file that is searching, find and replace and insertion. The sed command is regular expression aware command, means it can understand [...]
How to Manage Linux Background Jobs with fg and bg Command
In Linux and Unix systems, a job is defined as a task that has started running and not yet completed. Each task is basically programs in execution which is a process. Each job is assigned with a unique id called [...]
Linux WC Command to Count Number of Lines, Words, & Characters
The wc (word count) command is used Linux and Unix systems to count the number of lines, words, characters from one or multiple text files. Wc is a terminal command and most used in bash shell scripting for line and [...]
Linux Create Groups Using Groupadd Command
Linux groups are required for easy management and administration of users. Linux and Unix system contains regular (normal) and system groups. Linux resources (say file or directories) are set with read, write or execute permissions for the associated group which [...]
Linux Chkconfig Command with Examples
The chkconfig is a simple command-line utility to manage services at each run level. Using chkconfig command you can list all services status (on or off) for each run levels and configure start and stop of service listed in '/etc/rd.d/init.d' [...]
How to Create Users Using Useradd Command in Linux
In Linux and Unix-like operating systems, the most common command to create users is 'useradd' or 'adduser'. As a system administrator, it often requires to add users, remove users, creating groups, and assign users. There's no difference between above mentioned [...]