139

I have a crontab that wgets a PHP page every five minutes (just to run some the PHP code), and I want to send the output of the request to standard out, while sending the normal wget output to /dev/null (or otherwise hide it). I couldn't find it in the wget manual.

I'm looking for something like:

wget -o stdout http://whatever.com/page.php > /dev/null

Anyone know?

migrated from stackoverflow.com Aug 10 '11 at 6:09

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  • 5
    Mistitled, should be "How do you redirect wget to null?". – Bob Stein Dec 30 '14 at 13:47
  • 2
    @BobStein-VisiBone I think it is titled correctly. I wanted the thing that is wget-ed to go to a stdout, and the normal stdout to go to null (i.e. ignore what it usually prints, and instead print the response body). – Sean Adkinson Dec 31 '14 at 1:24
  • 6
    Oh! I stand corrected. I have started using wget http://example.com/page.php -qO- (That's a capital Oh.) That standard-outputs ONLY the response body. Is that what you wanted? – Bob Stein Dec 31 '14 at 4:32
147

wget -O - http://whatever.com/page.php > /dev/null

or, if you want to redirect standard error output also:

wget -O - http://whatever.com/page.php > /dev/null 2>&1

or, for codegolf :-)

wget -O-

  • 12
    You may want to add -nv to avoid the progress indicator overwriting the output. – Tor Klingberg Nov 10 '15 at 15:25
  • This approach has a problem - if response status is not 200, it doesn't print body. Any thoughts to resolve it? – Imaskar Aug 13 '18 at 9:24
67

A simpler version

wget -qO- http://example.com

equivalent to

wget -q -O - http://example.com

where

  • -q turns off the output of log, including error information
  • -O -, equivlalent to -O /dev/stdout, means dump the web page to a file named /dev/stdout.
  • The first one works with BusyBox's wget, which is very helpful. I don't think it likes having a space after the O – zymhan Jul 19 at 15:10
18
wget -qO /dev/null http://whatever.com/page.php
  • -q to make it quiet
  • -O /dev/null to ignore the page contents
6

You can also try:

wget -q -O - http://whatever.com/page.php > /dev/null 

the -q will make it "quiet"

Or have the file go to some temp html page that you don't mind having. whatever.com/tempFile.html

3
wget -O /dev/null http://example.com/
  • It works on my mac with wget 1.12. – Simon Aug 9 '11 at 22:29
  • Could you provide some explanation about what your code does? – Tamara Wijsman Nov 5 '11 at 1:14
  • -O means "write output to this file" – thomasrutter Nov 14 '17 at 23:57

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