Very useful Linux commands for administering your system and managing user accounts.

Posted: April 29, 2013. At: 9:13 PM. This was 4 years ago. Post ID: 5678

Bill Gates in the old days.
Bill Gates in the old days.

The best Linux commands are the simplest ones. One that you use a lot is the sudo command. This is controlled by the /et/sudoers file that controls the user accounts that are allowed to access the sudo command. You can set this up so that only certain users can access sudo. This is a good way to manage security on a Linux machine.

This posting:, describes how to add a user to the sudoers file so that they can run commands with elevated privileges.

Here is another posting that describes how to add your user to the /etc/sudoers file on Debian:

And how to unlock the root account on Linux Mint or Ubuntu with the command-line: This is very useful if you want the proper root account back. Make sure that it has a strong password though.

Awesome Linux shell wildcard tricks. This is very useful for manipulating file listings and deleting files with strange names from your machine:

The ifconfig command may be used to set a static IP address for your server.

This is a sample of the usage of this command.

adeptus-mechanicus ~ # ifconfig eth1 netmask broadcast

This shows that you can easily edit the network settings with the command-line and get an optimal network configuration without needing the GUI. That is why Linux is so good for setting up a network. The only thing thing that is really annoying on Ubuntu Server is configuring a Samba server to provide logins for Windows 7 machines. That is very challenging but it is possible. Supplying a network of Windows machines with logins from an Ubuntu server would be a very cool thing indeed.

This posting of mine contains some awesome shell tricks for the Linux console. Especially how to make the contents of a shell variable uppercase:

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