如何使用 bash 脚本在 linux 中创建命令？

Question

I am trying to make a command for the terminal. I have a bash script prepared (la.sh) and I want to just be able to type la to run it. How am I able to get the code so that I can just type la?

I have tried putting it in the /bin folder however had no luck.

What can I do to fix this?

I am using the latest version of Manjaro Gnome.

Thanks a lot!!!

BTW, the script was literally just ls .

It was just a practice script.

Answer 1

The file la.sh must be placed in your path . Then you can create an alias for it.

alias la="la.sh"

Answer 2

Lets consider that your script is stored under /some/path/la.sh . In my opinion, you have several solutions to accomplish your goal:

Option 1:

Add the script to your user's path so you can directly call it.

echo "export PATH=$PATH:/some/path/" >> ~/.bashrc

Then you will be able to use in your terminal:

$ la.sh

Using this option you can call la.sh with any parameters if needed. If the requirement is to call simply la you can also rename the script or create a softlink:

mv /some/path/la.sh /some/path/la

or

ln -s /some/path/la.sh /some/path/la

Option 2:

Create an alias for the script.

echo "alias la='/some/path/la.sh'" >> ~.bashrc

Then you will be able to use in your terminal:

$ la

However, using this option you will not be able to pass arguments to your script (executing something similar to la param1 param2 ) unless you define a more complex alias (an alias using a function in the .bashrc , but I think this is out of the scope of the question).

IMPORTANT NOTE: Remember to reload the environment in your terminal ( source .bashrc ) or to close and open again the terminal EVERY TIME you make modifications to the .bashrc file. Otherwise, you will not be able to see any changes.

Answer 3

If you want to have a command be available under two different names ( la.sh and la in your case), I recommend against using an alias: An alias defined in your .bashrc is only available in an interactive bash; If you run, say, a non-bash interactive shell, or writing a bash script, you can't use it.

The IMO most general way is to create a link. Since you said that you have already placed la.sh into bin, you can create the link in the same directory, ie

ln /bin/la /bin/la.sh # creates a hard link

or

ln -s /bin/la /bin/la.sh # creates a symbolic link

In your case, either one is fine. If you want to find out more about the differences between hard and symbolic link, look for instance here .

Answer 4

It worked with a mixture of everybody's answers.

All I had to do was go into the directory that la.sh was in. Rename it to just la as a text file. Run chmod 777 la to turn it into executable to anybody. Add it to my path by using the command export PATH=$PATH:~/Directory/It/Was/In/

Thank you to all who contributed.