Show memory usage

fping checks whether the host exists

Control the screen width occupied by file content when output

After reading the file, optimize the processing and output

A better shell than bash

New firewall software on Linux, a tool similar to iptables

Used to find and display user information

Tag or UUID lookup file system

Find files in the specified directory

Used to detect the type of a given file

The string is converted into "characters and characters".

Search a file for a text string