Windows	Linux command	How to run	Defination
0	apropos	apropos   name_group	list the installed application related to the gruop,for example type: apropos browser will list all installed browsers
0	at	at   job   time	executes commands at a specified time
0	atq	atq	lists the user's pending jobs
0	atrm	atrm   job_number	deletes jobs, identified by their job number
0	&	command   &	puts the program in the background
0	bg	bg	reactivate the suspended program in the background
0	bzip2	bzip2   -dvf   file_bz2	decopress bz2 files
0	cat	cat   /path/to/file	writes the contents of the file to the terminale or to other input
open	cd	cd   /path/to/direcotry	open the directories
cd ..	cd..	cd..	go one level up
0	chgrp	chgrp   -R   group   file_name	change the group of file or directory
0	chmod	chmod    -R   0RGO   file_name	change permissions for the file,first zero is not count, R=owner,G=group,O=others,0=no permission,execute=1,write=2,read=4 for example to give all permissions to all: chmod -R 0777 myfile
0	chown	chown   -R   owner   file_name	chang the owner of file or directory
copy	cp	cp -ivr target  destination	copy from the target to the destination
0	crontab	crontab   -e	to run the processes frequently in the given time
0	ctrl+Z	ctrl+z	interrupt a process runing in the foreground
0	crtl+C	ctrl+C	stop a process runing in the foreground
0	df	df	show partitions of hard disk
0	du	du   file_name	estimate file space usag
0	fg	fg	put the background program to the foreground
0	file	file file_name	showt file types
find	find	find   file   search_directory	find the file in this directory
0	free	free	Display amount of free and used memory in the system
0	fsck	fsck    device name or mount point	check and repair Linux file systems
find	grep	ls   |   grep    file_name	use with ls to find the file
0	groupadd	groupadd   group_name	creating group you must be root
0	groups	groups   user_name	show the group of user
0	gunzip	gunzip   file_.gz	decopress the gzip files
0	head	head  lines or bytes   file_name	show the first part of the file
0	history	history   -n   number	show the last n numbers history of bash
0	ifconfig	ifconfig [interface]	configure your network interface
0	id	id [options]	print real and effective user and group IDs
0	jobs	jobs	list the background programs
0	kill	kill   -9   process_number	end the numbered process
0	ldconfig	ldconfig	configure dynamic linker run time bindings
0	less	ls   |   less	list the files partialy, continue with enter
shortcut	link	link   -s   target_file  link_name	create soft links to the files
find	locate	locate  file_name	list directories contains the file
dir	ls	ls  directory_name	list the files in the directory
new folder	mkdir	mkdir   -p    /path/and/name	will create all the directories in the path
same as format	mkfs	mkfs [ -V ] [ -t fstype ] [ fs-options ] partition or mount point [ blocks ]	format &build a Linux file system
0	mount	mount	The command reports all the mounted devices
0	more	ls | more	same as less
delete	mv	mv   direcotry_name	perminently delete file or direcotry
rename	mv	mv   old_file   new_file	rename the file or direcotry
move	mv	mv   -iv   source_pathe   destination_path	moves the file or direcotry from source to the destination
netsate	netstate	netstate	show network statuss
0	passwd	passwd	changing password for the current user
0	ps	ps   auwx	show runing porcess
0	pwd	pwd	show the current working directory
reboot	reboot	reboot	rebooting the system
0	renice	renice   -n increament   process_number	alter priority of runing process
delete	rm	rm   -rf   file_name	delete files or direcotories
0	sleep	sleep   number   s	delay for the specified time in seconds(s),minutes(m),hours(h)
0	su	su	work as root and the user account,you will be asked for the root password
0	tail	tail   lines or bytes   file_name	show the end part of file
0	tar	tar   -zxrf   file_.tar.gz	decopress files tar.gz
0	tar	tar   -jxvf   file_tar.bz2	decopress tar.bz2 files
0	tar	tar   -xvf   file_tar	decompress tar files
0	top	top	display linux tasks
makefile	touch	touch   /path/to/file_name	create the named file in the path
0	uname	uname   -rm	print system information
0	uptime	uptime	since how long the system is runing
0	useradd	useradd   -g  group_name   user_name	add new user you must be root
0	userdel	userdel   user_name	delete the user you must be root with -r will delete the home directory as well
0	vmstate	vmstate	report virtual memorry statistics
0	w	w	who is logged on and what are doing
0	wall	wall   message	send the message to every bodies terminal who is logged on
find	whereis	whereis   program_name	search a program or file and show the path
0	which	which   program_name	show the path of the program
0	who	who	show who is logged on