How/Command to check the previously executed command’s status(success or not) – Unix/Linux

In some strange situations it would be more helpful for us to find the previously executed command’s status(success or not). We can figure it out by using the following command;

# echo $?

Output:

0 : The '0' represents, successfully executed command status. :-)
Any other digit : represents, the previously executed command was failed. :-(

Example:

----
[[email protected] ~]# gdgmd
bash: gdgmd: command not found
[[email protected] ~]# echo $?
127
----
[[email protected] ~]# man ls
[[email protected] ~]# echo $?
0
----

Related Links:
echo $SHELL

Arunlal Ashok

Linux Server Administrator. I'm dealing with Linux servers since 2012. I started this blog to share and discuss my ideas with the world. Check My Profile!! in uPwork (oDesk) and let me know if you need any assistance. Thanks!!

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