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

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Arunlal Ashok

Engineer at Endurance International Group. Linux lover.

Always happy for an open discussion! Write to arun (@) crybit (dot) com.

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