How to run a command or script after running apt-get command on a Debian or Ubuntu Linux

If you want to run a command or script after running apt-get on a Debian or Ubuntu Linux system, you have a few different options:

1. You can use the && operator to chain the two commands together, like this:

sudo apt-get update && my_command

This will run the apt-get update command, and if it succeeds (i.e. returns a zero exit code), it will then run the my_command command.

2. You can use the ; operator to separate the two commands, like this:

sudo apt-get update; my_command

This will run the apt-get update command and then run the my_command command, regardless of the exit code of the apt-get update command.

3. You can use the bash&& operator in a script, like this:

#!/bin/bash
sudo apt-get update && my_command

Save the script, make it executable with chmod +x script.sh and then run it with ./script.sh.

4. You can use the bash; operator in a script, like this:

#!/bin/bash
sudo apt-get update; my_command

Save the script, make it executable with chmod +x script.sh and then run it with ./script.sh.