Very useful Linux administration commands

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Love Linux Live Linux (c)

I primarily use Linux on my laptop, I have both Ubuntu 12.10 and OpenSUSE 12.2 running on the laptop. I have always had at least 2 Linux distros multi-booting laptop since 2009.

In this post I will share with you, some very useful Linux commands -

man any_command  the manual for target command>
ls files in current directory>
ls  –a maximum information about all files, including hidden>
mv source destination  a file or directory>
rm target
cp source destination  file or directory>
mount /dev/device_name /media/device_name filesytem>
umount /media/device_name <Unmount>
df –h filesystem and available disk space  in KB, MB, GB>
ps – ef all running processes, with full details>
top system monitor showing a more extensive view of all processes and system resources>
nohup command & a process in the background and have it keep running after you log off>
~/  user's home directory>
ifconfig  network interfaces>

iwconfig  wireless network interfaces>
ssh username@ip_address  to a remote server>
ping ip_address  to see if target is online and responding>
traceroute6 ip_address  network route to target>
iptables –L  firewall rules>
adduser a new user>
usermod user privileges (be very careful with this one)>
chmod <# Change privileges over file or directory >
chown user_name:group_name directory_name owner of a file or directory>
su username  become a different user>
users usernames of logged in users>
Infact, you can administer your mysql database directly from the CLI
CREATE DATABASE databasename;
CREATE USER username@localhost IDENTIFIED BY 'password'; a new user>
show tables;  database schema>

Know other useful Linux commands? Please share via the comment box.


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