As an administrator or GNU/Linux enthusiast you might come across a requirement of logging information from you shell scripts into files whenever they are run. We would love to do this if the files created have a unique name and also give out information when it was created.
In this post we will see how we can achieve that.
shell scripting
Some or the other time as a sys admin you will come across a need to add multiple users to your Linux system. So the question is how to do the same.
Let us see how we can do the same in this post.
We will assume that N number of users are to be added with a standard prefix or suffix and values incrementing with numbers. e.g. employee27... emp28.. etc
The command to add a user is useradd
The command can be simply run as:
BASH is the default shell in GNU/Linux systems. While writing BASH scripts sometimes it become necessary to take action based upon the success of previous command. So how do we do this.
First we need to understand that almost every command that is run once completed returns a exit code, 99% of commands just use 0 for success, 1 for failure. Without getting into other details, lets see how we can use this value.