A script is a file that contains commands. When you run the script, the commands are performed.
The first line of a script should give the command
interpreter to use. If you want your script to be read
by the bash command interpreter, the first line should be
#!/bin/bash
To use the sh command interpreter (often used for scripts),
use first line
#!/bin/sh
A script can use command-line parameters. Write $1 to refer
to the first parameter, $2 to the second, etc. For example,
suppose that the following is stored in a file called show.
#!/bin/sh
echo $1
cd $1
ls
Then command
show 3300will write
3300 …where the … part is a listing of what is found in directory 3300. That is very similar to what is done by command
ls 3300