quick work around linux Unix.

This note is a collection of few quick work around to do some linux unix work.

*) diff:

diff -w file1 file2  [ This will remove empty space. ]

diffing b/w local and remote files

diff -w localfile <(ssh remote_server 'cat remote_file')

NOTE: there should not have any space between <(
NOTE: It will be nice if you have a ssh config settings.

diffing b/w two remote files

diff -w <(ssh remote1 'cat remote1_file') <(ssh remote2 'cat remote2_file')