June 2004
Intermediate to advanced
1056 pages
39h 58m
English
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Name
look
Synopsis
look [options]string[file]
Looks through a sorted file and prints all lines that begin with
string. Words may be up to 256 characters
long. This program is potentially faster than
fgrep because it relies on the
file being already sorted, and can thus do
a binary search through the file, instead of reading it sequentially
from beginning to end.
With no file, look
searches /usr/share/dict/words (the spelling
dictionary) with options -df.
Options
-
-d Use dictionary order. Only letters, digits, space, and tab are used in comparisons.
-
-f Fold case; ignore case distinctions in comparisons.
-
-tchar Use
charas the termination character, i.e., ignore all characters to the right ofchar.
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.