I was browsing the CPAN search site today looking for modules.
Those of you that dunno perl will not know CPAN.
Even if you do know perl I wonder how many know that perl comes pre
installed with certain modules.
Stuff like Digest::MD5, Digest::SHA1, Tie::File and many others.
For stuff that you wish to do that is not distributed when you
install perl you require to install like this:
# perl -MCPAN -e 'install Text::Reform;'
This is going to bug you before you find that it installs the module requested.
This also illustrates that perl has a fairly extensive command line
processing engine which has made a lot of
per one liners popular.
The examples I showed for file processing line by line looking for
patterns and modifying some can be done
using one liners.
But they are for advanced use.
In fact,
$ perl -pi -e 's/girish/nobody/' /tmp/ex.txt
will do an in place replacement which is a cool feature.
-Girish
--
Gayatri Hitech
http://gayatri-hitech.com
