What does exit code 255 mean?

What does exit code 255 mean?

3.7. Depending on our shell, exit code 255 might mean that the returned exit code is outside of the 0-255 range.

What is exit status in shell script?

What is an exit code in bash shell? Every Linux or Unix command executed by the shell script or user has an exit status. Exit status is an integer number. 0 exit status means the command was successful without any errors. A non-zero (1-255 values) exit status means command was a failure.

How do you exit a shell script gracefully?

To end a shell script and set its exit status, use the exit command. Give exit the exit status that your script should have. If it has no explicit status, it will exit with the status of the last command run.

How do I find the exit code for a script?

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 does the exit status of a program indicate?

The exit status of a process in computer programming is a small number passed from a child process (or callee) to a parent process (or caller) when it has finished executing a specific procedure or delegated task. In DOS, this may be referred to as an errorlevel.

How can I check my exit status?

Every command that runs has an exit status. That check is looking at the exit status of the command that finished most recently before that line runs. If you want your script to exit when that test returns true (the previous command failed) then you put exit 1 (or whatever) inside that if block after the echo .

How do I exit bash script without exiting shell?

Use return . The return bash builtin will exit the sourced script without stopping the calling (parent/sourcing) script. Causes a function to stop executing and return the value specified by n to its caller.

What is exit 0 and exit 1 in shell script?

exit(0) indicates that the program terminated without errors. exit(1) indicates that there were an error. You can use different values other than 1 to differentiate between different kind of errors.

Is Tanzania an African country?

The United Republic of Tanzania is an East African country bordering the Indian Ocean. Its neighbours are Kenya and Uganda, to the north, Rwanda, Burundi and Democratic Republic of the Congo, to the west, and Zambia, Malawi and Mozambique to the south. The country includes the island of Zanzibar.