Unix: How to Write Shell Script Using vi Editor

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When you login into UNIX, you are first in the home directory:

$/home:

Then you can issue

$/home: cd jthomas

Then you come to your own directory:

$/home/jthomas:

How to write your first script:
$/home/jthomas: vi test.sh

Here, you can write your script.
The first line in the script is:

#!/bin/ksh - It denotes which shell you are going to use.

Example:

$vi test.sh

 #!/bin/ksh 
################################################### # 
Written By: Jason Thomas # Purpose: This script was written to show users 
how to develop their first script 
################################################### # Denotes a comment

root

daemon bin sys adm uucp nobody lpd

How to run a script

$ sh test.sh

Also read: The complete list of UNIX basic commands