Basic Linux Commands

devendra@ubuntu:~$ arch
i686
Show the processor type
devendra@ubuntu:~$ exit
Exit the shell
devendra@ubuntu:~$ ll
total 488
drwxr-xr-x 50 devendra devendra 4096 2010-08-08 19:33 ./
drwxr-xr-x 3 root root 4096 2010-05-15 20:55 ../
devendra@ubuntu:~$ cd /home
devendra@ubuntu:~$ adduser Add user
devendra@ubuntu:~$ addgroup Add Group
devendra@ubuntu:~$ apt-get
apt 0.7.25.3ubuntu7 for i386 compiled on Apr 15 2010 04:30:22
Usage: apt-get [options] command
apt-get [options] install|remove pkg1 [pkg2 ...]
apt-get [options] source pkg1 [pkg2 ...]

apt-get is a simple command line interface for downloading and
installing packages. The most frequently used commands are update
and install.
devendra@ubuntu:~$ cal
August 2010
Su Mo Tu We Th Fr Sa
1 2 3 4 5 6 7
8 9 10 11 12 13 14
15 16 17 18 19 20 21
22 23 24 25 26 27 28
29 30 31
devendra@ubuntu:~$ cat file name
Show the file contents
devendra@ubuntu:~$ chgrp change group ownership
devendra@ubuntu:~$ chmod change access permission
devendra@ubuntu:~$ chown change file owner and group
devendra@ubuntu:~$ clear clear the screen
devendra@ubuntu:~$ df Show free space in your system drive
devendra@ubuntu:~$ diff Compare files line by line Between two files
devendra@ubuntu:~$ netstat Network information
devendra@ubuntu:~$ ifconfig lan information
devendra@ubuntu:~$ mtr traceroute