from small one page howto to huge articles all in one place

search text in:

Which kernel version do you use?

poll results

Last additions:
using iotop to find disk usage hogs

using iotop to find disk usage hogs






average rating: 1.7 (82 votes) (1=very good 6=terrible)

May 25th. 2007:




why adblockers are bad

Workaround and fixes for the current Core Dump Handling vulnerability affected kernels

Workaround and fixes for the current Core Dump Handling vulnerability affected kernels






average rating: 1.3 (27 votes) (1=very good 6=terrible)

April, 26th. 2006:

Druckversion . pdf icon
You are here: System->Tips and Tricks

Using watch to repeat comands

This tip shows you how to use watch to have commands run repeatedly. Make sure you have the sys-apps/procps package installed to make use of watch.

Whenever you have a long-running process (such as removing a complex directory tree or creating a large backup with tar), it is common to periodically check the progress of the task using ls, ps, grep, or a combination of these and other utilities. Instead of repeatedly executing these commands, you can have watch do it for you. For the most basic usage, just append your command to watch and run it. The screen will update every few seconds (2 by default), and rerun the command for you.

For example, if you're copying an ISO image that's about 650MB and you want to see if it's done, you could use a command similar to this one:

Code Listing 1

% watch ls -lh filename.iso

When the size stops increasing and it's around 650MB, you know the file copy operation has finished.

For more information on using watch, see man 1 watch.


rate this article:
current rating: average rating: 2.0 (5 votes) (1=very good 6=terrible)
Your rating:
Very good (1) Good (2) ok (3) average (4) bad (5) terrible (6)

Support this site

Please read "Why adblockers are bad".

Other free services
Shorten long
URLs to short
links like
Reverse DNS lookup
Find out which hostname(s)
resolve to a
given IP or other hostnames for the server
rdf newsfeed | rss newsfeed | Atom newsfeed
- Powered by LeopardCMS - Running on Gentoo -
Copyright 2004-2013 Sascha Nitsch Unternehmensberatung UG(haftungsbeschränkt)
Valid XHTML1.1 : Valid CSS : buttonmaker
- Level Triple-A Conformance to Web Content Accessibility Guidelines 1.0 -
- Copyright and legal notices -
Time to create this page: 4.1 ms