Here I am going to describe some commands which can help us in day to day task.
The basename command will strip off the directory portion of a filename
path and return only the filename itself. In the following example,
basename is used to strip the directory path from the filename so it
returns simply dfs.sh.
linux@atul $ basename /home/atul/script/WORKING_FINE/dfs.sh
The basename utility also allows the extension or suffix to be stripped
from a file basename. The extension to be stripped is added after the
file path. In the following example, .sh is added after the filename.
The return from basename is the single word file:
linux@atul $ basename /home/atul/script/WORKING_FINE/dfs.sh .sh
The dirname utility is the complement of basename. It returns the
"path" component of a file pathname string, as shown in the following
listing. In the second dirname example, dirname also removes the
trailing slash before attempting to understand the string. The result is
that the dirname portion of
linux@atul $ dirname /home/atul/script/WORKING_FINE/dfs.sh
has no options for the command and simply returns the directory portion
of a file path. It is not used as often as basename.