June 2004
Intermediate to advanced
1056 pages
39h 58m
English
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Name
colrm
Synopsis
colrm [start[stop]]
Removes specified columns from a file, where a column is a single
character in a line. Reads from standard input, and writes to
standard output. Columns are numbered starting with 1; begin deleting
columns at (including) the start column,
and stop at (including) the stop column.
Entering a tab increments the column count to the next multiple of
either the start or
stop column; entering a backspace
decrements it by 1.
Example
List all of the contents of a directory and remove the permissions, UID and GID, file size, and the date/time information, leaving just the filenames:
$ ls -la | colrm 1 50Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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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.