How to Find Top Running Processes by Memory Usage
Linux is the top choice of an operating system when it comes to server-based systems. System administrators and even advanced users of Linux have a good deal of knowledge of the command line and know
Linux Commands
How to Extract Email Addresses from Text File in Linux
Text files contain a continuous stream of characters in no predefined format whatsoever. While some file formats have developed on top of text files (Eg. JSON, YAML), which expect text data to be present in
How to Copy Large Number of Files in Linux
We use the cp command in Linux to copy files and directories from one directory to another. It can be simply used to copy a few files or directories, or it can be used with
What is ‘> /dev/null 2>&1’ in Linux
/dev/null is a pseudo-device file in Linux, which is used to discard output coming from programs, especially the ones executed on the command line. This file behaves like a sink, i.e. a target file which
How to Redirect Output to /dev/null in Linux
In Linux, programs are very commonly accessed using the command line and the output, as such, is displayed on the terminal screen. The output consists of two parts: STDOUT (Standard Output), which contains information logs
What is /dev/null in Linux
The ‘/dev‘ directory in Linux and Unix based systems contains files corresponding to devices attached to the system. For example, as seen in the screenshot below, the CD drive is accessed using ‘cdrom‘, DVD drive
How to Limit the Depth of Recursive File Listing in Linux
In Linux, we use the ls command to display the file listing, i.e., a list of files and directories in a directory. The command is available by default as part of GNU Coreutils. List Files
How to Move Large Number of Files in Linux
To move files from one directory to another, the ‘mv‘ command is used in Linux. This command is available in Linux by default and can be used to move files as well as directories. The
How to Enable “Universe” Repository in Ubuntu
‘Universe‘ is one of the standard repositories in Ubuntu, which contains community maintained free and open-source software, as opposed to ‘Main‘, which contains free and open-source software maintained by Ubuntu’s parent company Canonical. When Ubuntu
How to Clear Apt Cache in Debian, Ubuntu and Linux Mint
apt (Advanced Packaging Tool) is the package installation and dependency management tool in Debian and other Debian-based distributions. It works on top of ‘Dpkg‘ which is nothing but the Debian package installer. The way apt