Linux Basic Command Collection 1

 

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	Basic command
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	sudo su - // instantly gets root rights
	ssh-keygen // generate both ssh private and public key
	cat ~/.ssh/id_rsa // read default ssh private key
	cat ~/.ssh/id_rsa.pub // read default ssh public key
	pwd // see the current path
	ls -al // to see all file and directory whatever attribute
	env // see all environment variable and the corresponding value
	man [commandn name] //see all about the command
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	linux permission
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	There are 3 type of patten #_ _ = owner , _#_ = group , _ _ # = other
	There are 3 type of permission 1 = execute , 2 = write , 4= read
	if you want to give all permission to owner then : 1+2+4=7
	if you want to give all permission to group tehn : 1+2+4=7
	if you want to give all permission to other then : 1+2+4=7
	command is :
	chmod 777 [filename]