Bash scripting is every Linux administrator's Swiss Army knife. Learn how using a for-loop in conjunction with Bash scripts can produce powerful results. Skip to content ...

Step 4: Press “Esc” to exit this mode. Then type “:w” to save your script. Once saved, the shell script will appear as below. ... Now you can create your own scripts in Linux following the ...

Using break 2, for example, would cause the script to exit both the current loop and the outer loop. The diagram below illustrates this. Notice how the break command exits both loops.

What you’ll need to go passwordless for Linux shell scripts The only thing you need to follow along with my example is two Linux machines and a user with sudo privileges.

Each Linux command returns an exit code, with 0 indicating success and non-zero values indicating failure. You can use the $? variable to access the exit code and control program flow in scripts.

Bash Script: Capture seg fault and exit loop. Thread starter dlp; Start date Feb 26, 2009; ... Either Linux or bash prints that the program run by my script seg faulted.

The exit command in quotes, by the way, is necessary or else the script will attempt to keep running. Of course, in an embedded system, you might want that behavior, too.