commands du,df,

Command: du
This command prints the disk usage (in Kb) of each directory and it’s sub
directories. By default it starts from the current directory, but supplying
the name of a directory after the command will make it start from that
directory.

Changing file permissions

chmod 755 file Changes the permissions of file to be rwx for the owner, and rx for the group and the world. (7 = rwx = 111 binary. 5 = r-x = 101 binary)
chgrp user file Makes file belong …

Moving copying files

cp file1 file2 —————- copy a file

mv file1 newname ———– …

Changing file permissions and attributes

chmod 755 file Changes the permissions of file to be rwx for the owner, and rx forthe group and the world. (7 = rwx = 111 binary. 5 = r-x = 101 binary)
chgrp user file Makes file belong to the group user.
chown yourself/othersname …

Basic Linux commands

Basic Linux Commands
1) man -This magic command brings up the online Unix manual.
2) ls-Lists files.
3) pwd-Shows present working directory
4) cd -Changes directories.
5)vi-An editing program
6) grep-Extracts information from files
7)chmod -Change file permissions.
rm -Delete file.
9)“cp” for copy
10)“mv” for move file