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Bash - how to use command line arguments in script

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Created by:
martineau
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This article will show you how to use command-line arguments in your script in Bash.

In Bash, we can use arguments that were passed as parameters of our script. We can refer to them using $1 (first parameter), $2 (second argument), etc.

 

Practical example

my_script.sh
#!/bin/bash

echo $1
echo $2
echo $3

After calling the script by:

$ ./my_script.sh one two three

The output is:

one
two
three

Go through all given arguments

my_script.sh
#!/bin/bash

for parameter in "$@" 
do
    echo $parameter
done

Calling the script: 

$ ./my_script.sh one two three four

Output: 

one
two
three
four

Bash

Bash - how to use command line arguments in script
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