Run Bash Script in Client from Local Server?

Question

I wrote a bash script for my use and it works. I want that script to be put in some server in my network and call that script in laptops / desktops in my network itself to execute. Any way I have made a way for that also as below.

Steps:

1. Install Apache web server in local server.
2. Put the script in web server.
3. Make the script executable chmod a+x.
4. Open terminal in the client machine and install the package curl

5. Now from the client terminal itself execute the command as:

   sudo curl -kL http://serverip/script.sh | bash
   

It works fine but only problem is, in my script I have used User input commands like "read variable", that doesn’t work in this scenario. So how to do that is my problem. Is there any way for me ?

Answer 1

You can use:

bash -c "$(curl -kL http://serverip/script.sh)"

This will run the script on the local machine. See also man bash to understand why I used -c option. Also double quotes are very important in this case.

Also, as @terdon said in his comment, sudo curl is pointless. If If the script needs local sudo permissions, you need to use sudo in front of bash command.

Answer 2

I think what you want is

wget http://server.com/scriptname.sh && bash scriptname.sh

That will simply download the script locally and run it.

Answer 3

As suggested in Radu's comment, why not using ssh to start your script from your local server?

First install openssh-server on your client system:

sudo apt-get install openssh-server

Then from your local server:

ssh -t client_login@client_ip '/path_to_your_script/script.sh'

The -t option in the ssh -t command force pseudo-tty allocation.