Scripting: Remove file extension from a filename

This is a quick tip on how to remove file extension from a filename. Lets say filename is redhat.csv and for us to extract the file name only and leave out the extension.

There is a couple of ways to do it

1. Using BASH built-ins if a variable has the filename assign to it,

[sai@centos66Vanilla ~]$ export VAR="redhat.csv"
[sai@centos66Vanilla ~]$ echo $VAR
redhat.csv

[sai@centos66Vanilla ~]$ echo ${VAR%.*}
redhat

or

[sai@centos66Vanilla ~]$ echo ${VAR%.csv}
redhat

2. Using the basename command

[sai@centos66Vanilla ~]$ echo $(basename $VAR .csv)
redhat