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Editorial Team
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Asked: 2026-06-18T11:10:33+00:00

I want to extract urls (matching a pattern) from a file & download them.

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I want to extract urls (matching a pattern) from a file & download them. Here’s my egrep expression (on Cygwin) : 

egrep -o -e "http([^\"]*)filter=[0-9]+" myfile.html

This works fine until I try to use a redirect or pipe. Example :

egrep -o -e "http([^\"]*)filter=[0-9]+" myfile.html > tmp.html

OR

egrep -o -e "http([^\"]*)filter=[0-9]+" myfile.html | wget -i -

Error :
egrep: >: No such file or directory

I think the error is due to the backslash before the quote but I’ve tried escaping it. Doesn’t work.

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1 Answer

  1. Editorial Team

    I just tried it and it succeeded for me with CYGWIN_NT-6.1-WOW64 1.7.17(0.262/5/3) 2012-10-19 14:39:

    Fisherscreek@Fisherscreek-PC ~
$ egrep -o -e "http([^\"]*)filter=[0-9]+" myfile.html >/tmp/out.txt

Fisherscreek@Fisherscreek-PC ~
$ cat /tmp/out.txt
httpZADfilter=42

    I wonder if you’ve got a Bash alias gone haywire.

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