I am going to send a command a day like Bharathi used to do.
But I have very little time and life is not in my hands.
So I will go away one day as mysteriously as I come.
So please don't mistake me when that happens. Here we go.
Everyone knows that cat command.
$ cat /etc/passwd
will print the file to console.
Now you can get line numbers into a file like this.
$ cat -n /etc/passwd > /tmp/passwd-with-lineno.txt
This is a very powerful usage of this command.
You can always view line numbers in vim/vi or emacs but sometimes you
want that in the file itself.
Then you have the tac command.
It prints the file in reverse.
$ tac /etc/passwd
-Girish
--
Gayatri Hitech
web: http://gayatri-hitech.com
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