How can I compare two files to see the diffferences ( this is important to
I.e. imagine I have in my compute var/log/XFree86.0.log and
etc/X11/XF86Config-4 and my floppy floppy/XF86Config-4.
I wold like to have and command to easily compare etc/X11/XF86Config-4 files
and write the differences in new file (i.e floppy/XF86Config-4.dif ).
On screen viewing would be a good thing to (seeing every document in a
columns, and the differences in a concrete color - i.e. in red - ).