[Edit]

Bash - check if command is supported

1 contributors

2 contributions

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8 points

Created by:

Nataniel-Barclay

499

In this short article, we would like to show how to check in Bash script if some command is supported under Linux.

Quick solution:

xxxxxxxxxx
 
#!/bin/bash
​
if ! command -v command_name_here &> /dev/null
then
    echo "command_name_here command is not supported!"
    exit 1
fi

Alternative solutions

Edit

We are able to use && or || conditions to check command results:

xxxxxxxxxx
 
#!/bin/bash
​
command -v command_name_here &> /dev/null || echo "command_name_here command is not supported!"

We are able to combine all if in one line:

xxxxxxxxxx
 
#!/bin/bash
​
if ! command -v command_name_here &> /dev/null; then echo "command_name_here command is not supported!"; exit 1; fi

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