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Tutorial10: Shell Scripting - Part 1

2 bytes removed, 08:39, 16 March 2021

→‎INVESTIGATION 2: SHE-BANG LINE / VARIABLES / PARAMETERS

# '''Insert''' the following line at the '''beginning''' of the '''first''' line of your hello file: #!/bin/bash This is referred to as a '''she-bang line'''. It forces this script to be run in the '''Bash Shell'''. When your Bash Shell script finishes execution, you are returned to your current shell that you are using (which in our case in Matrix, is still the Bash shell). [[Image:hello3.png|thumb|right|275px|Changing the Bourne shell and running shell script '''with''' a '''She-bang''' line (forcing script to run in the '''Bash''' shell).]]

# '''Save''' your editing changes and '''exit''' your text editor.

# While in the ''Bourne shell'', issue the following Linux command: ./hello You should notice that the shell name is running in the '''Bash shell''' (i.e. ''/bin/bash''). # It is a good idea to rename your shell script to include an '''extension''' to indicate that it is a '''Bash Shell''' script. Issue the following Linux command to rename your shell script file: mv hello hello.bash

# Confirm that the modification work by running your Bash shell script: ./hello.bash

# Enter the following Linux command to '''exit''' the ''Bourne shell'' and return to your ''Bash shell'': exit Let's use some '''ENVIRONMENT variables''' in our Bash Shell script.

Msaul

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Tutorial10: Shell Scripting - Part 1

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