How do you make a shell script executable in Terminal on Mac?

To make a shell script executable in Terminal on a Mac, using the command chmod +x ScriptName.sh is the most commonly accepted method. This command changes the file permissions to allow the script to be executed. When you apply chmod +x, you're giving the user permission to execute the script, which is essential for running shell scripts directly from the command line.

The first option, chmod 755 ScriptName.sh, while technically correct and also makes the script executable, goes a step further by setting specific permissions for the owner, group, and others. The '755' means the owner can read, write, and execute, while the group and others can only read and execute. This level of permission might not be necessary if you simply want to make the script executable for your own use. However, it is still valid for making the script executable.

The command sh ScriptName.sh merely runs the shell script without modifying its permissions; it doesn't make the script itself executable and assumes you want to execute it in a shell environment.

The phrase "make ScriptName.sh executable" is not a specific command in the Terminal and does not provide any executable instruction to the system, thereby not allowing you to set the executable permission.