How do you exit a code in Linux?
To set an exit code in a script use exit 0 where 0 is the number you want to return. In the following example a shell script exits with a 1 . This file is saved as exit.sh .
What is exit code 1 Linux?
Exit Code 1 indicates that a container shut down, either because of an application failure or because the image pointed to an invalid file. In a Unix/Linux operating system, when an application terminates with Exit Code 1, the operating system ends the process using Signal 7, known as SIGHUP.
How do I find my exit code?
Checking Bash Exit Code Launch a terminal, and run any command. Check the value of the shell variable “$?” for the exit code. $ echo $? As the “date” command ran successfully, the exit code is 0.
What is exit code 3 Linux?
In the case you’re linking to you can clearly see a few lines above the check for exit code 3 that it is used to indicate that the code has changed. Ie in this case this will give the behaviour that the automatic restart is done as long as the reason to terminate was that the code changed and nothing else.
What is exit 3 in shell script?
You can use value of exit status in the shell script to display an error message or run commands….List of common exit codes for GNU/Linux.
| Exit Code | Description |
|---|---|
| 0 | Success |
| 1 | Operation not permitted |
| 2 | No such file or directory |
| 3 | No such process |
What is exit code 2 Linux?
Exit code 2 signifies invalid usage of some shell built-in command. Examples of built-in commands include alias, echo, and printf.
What is exit code 255 Linux?
Depending on our shell, exit code 255 might mean that the returned exit code is outside of the 0-255 range.
What is a return code in Linux?
An exit code, sometimes known as a return code, is the number between 0 and 255 returned to a parent process by an executable or command when it returns control to its parent process. Every command returns an exit code which can be either a return status or an exit status of the application.