Basic Linux Commands

Commands in linux
Command	Meaning
ls	Will list the items in files
ll	Will list the items vertically
cat	Will help to read the file mentioned in command.
cd ..	Will one directory back
diff	print line difference in files. Not the entire string
grep	grep 'abc ' /chitrank/txt . Search abc text in txt files
grep -v	grep -v 'abc' /chitrank/txt . Not condition of above grep
grep -i	ingnore case
grep -w	to search on given word
cat /chitrank/input/*  | grep -i 'a'	Grep commands with pipe
cat /chitrank/input/*  | grep -l 'a'	to list the file with given word
grep --color 'a'	Will show matches in color
mkdir	will make directory
cd /folder/file	will move to that file directory
awk	find or replace text
chmod	change the access of files or directory // fullacess chmod ug+rwx file.txt  // revoke chmod g-rwx file.txt // give access chmod -R ug+rwx file.txt
chown	change user and group ownership
adduser	add a new user
echo	display message on console
cnp	comapre two files
mv	move file
passwd	modify user password
pwd	print working dir
tar	to
useradd	add new user account
nano	to open editor and make files
sort	to sort file
unzip	unzip a flie
top	find the programs running
kill	kill a task
man	diplays main page
tail	print last lines in file
less	prints less number of outputs
su	switch to other user. Root can switch widout password
yum	to install apche using yum
rpm	to install apche using rpm
date	prints date
get	get file from other loc
put	put file to other loc
find	find files using file name
ssh	remote accesss
cut	cut some part from files
tr	replaces some pattern and changes file output format // tr -s '|' ',' < Ret_MediaTP | cut -f1-28 -d, > MediaTp__Ret.txt
	To find File name
	find . -type f -printf "%f\n" > /home/hduser1/chitrank/freshseq