Bash Script Tips

I am not the expert of Linux system administrator, but every day I work and use Linux/Unix based systems and found myself that I am familiar with most of the shell script command lines and use them very effective and productive.

Today I would like to share my experiences with those commands and the best practices.

alias is a Linux command used for shortcuts/aliases of a bash command. It is a fast way that you can map the long command line into short and easy to remember. The syntax is

In order to make the alias command works permanently with your account profile. You should add the alias command as follows in ~/.bashrc:

Append the lines below into fille ./bashrc

Some alias commands are a very safe place to apply especially in the PRODUCTION environment.

dd command

chmod | chown command

These commands are very often being used in the LINUX system. However, you might make a mistake easily with typo mistake with the following case:

More command alias makes your work more productivities

Grant sudo command with specific user with specific action and folder

There are other commands such as

We know now how to find all sudo users in our Linux system. How to find whether a certain user has sudo privilege or not? That’s easy!

To find if an user is sudo user, simply run

Sample output:

I hope this article can help you and enlarge your knowledge with the bash shell scripts.

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I look forward to the feedback and comments

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