Mastering Linux Shell Scripting - Second Edition

Ensuring a unique name

We can now create and execute a simple script, but we need to consider the name a little. In this case, hello1.sh will be good enough and is unlikely to clash with anything else on the system. We should avoid using names that may clash with existing aliases, functions, keywords, and building commands, as well as avoiding names of programs already in use.

Adding the sh suffix to the file does not guarantee the name will be unique, but, in Linux, where we do not use file extensions, the suffix is part of the filename. This helps you to provide a unique identity to your script. Additionally, the suffix is used by the editor to help you identify the file for syntax highlighting. If you recall, we specifically added the ...