Check if a file is really a file, whether a string contains anything, and whether you can run a program with these vital patterns.
Source: https://www.howtogeek.com/the-test-patterns-that-real-world-bash-scripts-actually-use/
Aggregated via Linux News
Source: https://www.howtogeek.com/the-test-patterns-that-real-world-bash-scripts-actually-use/
Aggregated via Linux News

