In Linux, we can call the computer to complete the functions we want to complete, whether it is automatic sorting of letters, automatic file sorting, performance testing, repeated execution of a certain task.
We call all do it by creating shell script in Linux.
And a convenient and easy-to-use shell script can input arguments from the command line. As I had such needs more and more times, I have an idea of recording the input arguments.
How to Input Arguments
Input arguments in shell script is quite simple. Basically, the symbols used to input arguments are as follows:
- $#: Shows several externally input parameters
- $0: File name
- $1: The first argument
- $2: The second argument
- …
- $n: The nth argument
That’ right, it’s so easy.
For example, I edit a test.sh file:
And input 1 and 2 into shell script
sh test.sh 1 2Output:
In fact, it is very simple to use.
References
- https://unix.stackexchange.com/questions/31414/how-can-i-pass-a-command-line-argument-into-a-shell-script
- http://linuxcommand.org/lc3_wss0120.php
- https://www.baeldung.com/linux/use-command-line-arguments-in-bash-script