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:

----
[root@localhost ~]# gdgmd
bash: gdgmd: command not found
[root@localhost ~]# echo $?
127
----
[root@localhost ~]# man ls
[root@localhost ~]# echo $?
0
----

Related Links:
echo $SHELL

Arunlal Ashok

Sr. Linux Server Administrator. I'm managing Linux servers since 2012. I started this blog to share and discuss my ideas. Check My Profile in uPwork (oDesk) and create a job, if you need any administration help. Thanks!!

You may also like...

Leave a Reply

Your email address will not be published. Required fields are marked *