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

Post navigation

Arunlal Ashok

Cloud Infrastructure / DevOps Engineer. I'm dealing Linux servers since 2012. I started this blog to share and discuss my ideas.

Always happy for an open discussion! Write to arun (@) crybit (dot) com. Check about me for more details. About this blog and our strong members, check The team CryBit.com

Leave a Reply

Your email address will not be published.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