*nix basics!

*nix basics!

Do you know any person`s name associated to *nix.
# Linus Torvalds (Linus)
# Richard Matthew Stallman (RMS)

How do you check file type
# file <filename.extension>

How do one create hidden file/folder in *nix
# Basically start file/folder with "." (dot) !
# mkdir .HiddenDirectory
# echo > .HiddenFile

How do one List hidden files (dot files) ('a' stands for all files)
# ls -a

Give me names of few *nix distributions/OS
# CentOS/RedHat/Fedora
# Debian/Ubuntu/LinuxMint/Google Chrome OS
# Android / FreeBSD / OpenBSD / iOS


Install Package in Ubuntu/Debian/Mint/ChromeOS
# apt-get install <package>

Install package in CentOS/Fedora/RedHat
# yum install <package>


To get documentation about any installed command.
# man <command>

To check how much time taken by any command executed.
# time ls
or
# time sleep 1

To change password of current user
# passwd

What are common *nix file editors?
# vi
# vim
# nano

Tell me few *nix commands! ;)
ls cat echo man whereis whoami which who last less df cp mv rm chmod chown mkdir rmdir zip kill pkill pwd passwd sleep ln grep vi sed find touch wget