How do I run a shell script without using "sh" or "bash" commands?

Solution 1:

Add a "shebang" at the top of your file:

#!/bin/bash

And make your file executable (chmod +x script.sh).

Finally, modify your path to add the directory where your script is located:

export PATH=$PATH:/appropriate/directory

(typically, you want $HOME/bin for storing your own scripts)

Solution 2:

These are the prerequisites of directly using the script name:

1. Add the shebang line (#!/bin/bash) at the very top.
2. Use chmod u+x scriptname to make the script executable (where scriptname is the name of your script).
3. Place the script under /usr/local/bin folder.
   • Note: I suggest placing it under /usr/local/bin because most likely that path will be already added to your PATH variable.
4. Run the script using just its name, scriptname.

If you don't have access to /usr/local/bin then do the following:

1. Create a folder in your home directory and call it bin.

2. Do ls -lA on your home directory, to identify the start-up script your shell is using. It should be either .profile or .bashrc.

3. Once you have identified the start up script, add the following line:

   PATH="$PATH:$HOME/bin"
   

4. Once added, source your start-up script or log out and log back in.

   To source, put . followed by a space and then your start-up script name, e.g. . .profile or . .bashrc

5. Run the script using just its name, scriptname.