The shebang line specifies that executing the script using Bourne shell while
some of the code uses possible bashisms like "[[" instead of "[" and "==" instead of "=".
If a user's /bin/sh is linked to other shells like "dash, ksh, etc...",
it might cause an issue for using the program.
The shebang line specifies that executing the script using Bourne shell while some of the code uses possible bashisms like "[[" instead of "[" and "==" instead of "=". If a user's /bin/sh is linked to other shells like "dash, ksh, etc...", it might cause an issue for using the program.