"exit" Command

Learn all about exit command

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exit - cause normal process termination or exit the shell

root:~# man exit

exit [n]

Exits the shell/process with a status of N.If N is omitted, then exit status is that of the last command executed.

Example-1

1.1 Check the Exit status of script

root@:~# cat temp.sh
echo hello world
exit -1
root@:~# bash temp.sh
hello world
root@:~# echo $?
255
root@:~#

Example-2

2.1 Check the status of command

root@:~# ls
temp.sh     dns_name.txt    mo_server.err    script.txt
root@:~# echo $?
0
root@:~#

Example-3

3.1 Disconnect from the terminal and last executed command status

parth@:~# sudo su
root@:~# echo hello there
hello there
root@:~# exit
exit
parth@:~# echo $?
0

parth@:~# sudo su
root@:~# echo hello there
hello there
root@:~# exit 1
exit
parth@:~# echo $?
1
parth@:~#