luyện

tar (Tape ARchive) - an archiving utility

sudo, sudoedit — execute a command as another user

strings - print the sequences of printable characters in files

sed - S tream ED itor for filtering and transforming text

SELinux stands for S ecurity- E nhanced Linux .

tmux is a terminal multiplexer: it enables a number of terminals to be created, accessed, and controlled from a single screen. tmux may be detached from a screen and continue running in the background, then later reattached.

pidof - find the process ID (PID) of a running program [using its name].

Fedora Workstation is an operating system for laptop and desktop computers, with a complete set of tools for developers and makers of all kinds.

Example of creating a 1.5GB swap partition on Arch Linux

ss is another utility to investigate sockets. It can display more TCP and state information than other tools.

xargs - build and execute command lines from standard input

One of my CentOS 7 Core hosts on CloudCone has only 256MB of memory. Here's my note while enable swap partition for it.

paste - merge lines of files

uniq - report or omit repeated lines