sed is great for pattern matching or retrieving lines
sed is great for pattern matching or retrieving lines
Here is a cool example
Say you type df:
The output would be something like:
[quote:3bb8d51437]Filesystem 1k-blocks Used Available Use% Mounted on
/dev/hda2 1712432 1206664 418780 75% /
/dev/hda1 31201 10505 19085 36% /boot
none 30932 0 30932 0% /dev/shm
[/quote:3bb8d51437]
Say you want the second line only you could pipe the output of df to sed
(replace the 2 in '2p' to retrieve a different line)
[code:1:3bb8d51437] df | sed -n '2p'[/code:1:3bb8d51437]
This will return only the second line:
[quote:3bb8d51437]/dev/hda2 1712432 1206664 418780 75% /[/quote:3bb8d51437]
As you can see sed can be very powerful and this is just the beginning of what it can do
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