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Full Discussion: simple sed
Top Forums Shell Programming and Scripting simple sed Post 302235795 by strike-2 on Friday 12th of September 2008 10:40:31 PM
Old 09-12-2008
Different Regex trick -- grouping
You put the \( in the wrong place

Correct version:
echo $thing | sed 's/hat:\([0-9]*[0-9]-[0-9]*[0-9]*\).*/\1/'

You could probably recuce that to:
echo $thing | sed 's/hat:\([0-9]*-[0-9]*\).*/\1/'

Maybe even:
echo $thing | sed 's/hat:\([0-9-]*\).*/\1/'
(not too sure about the usage of '-' between '[' and ']'

\( and \) are markers where your 'group' begins and ends.
That same group is later recalled with \1

Yes, you can use multiple \( and \) and then recall those with \1, \2, \3, etc...
 

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LEARN ABOUT DEBIAN

mu-bookmarks

MU-BOOKMARKS(5) 						File Formats Manual						   MU-BOOKMARKS(5)

NAME

       bookmarks - file with bookmarks (shortcuts) for mu search expressions

DESCRIPTION

       Bookmarks  are  named  shortcuts  for search queries. They allow using a convenient name for often-used queries. The bookmarks are are also
       visible as shortcuts in the mu experimental user interfaces, mug and mug2.

       mu supports bookmarks stored in a file called bookmarks in the mu home directory (typically, this would be ~/.mu/bookmarks).

       The bookmarks file is a typical key=value .ini-file, which is best shown by means of an example:

	   [mu]
	   inbox=maildir:/inbox 		 # inbox
	   oldhat=maildir:/archive subject:hat	 # archived with subject containing 'hat'

       The [mu] group header is required.

       For practical uses of bookmarks, see mu-find(1).

LOCATION

       The bookmarks file is read from <muhome>/bookmarks. Typically, this would be ~/.mu/bookmarks, but this can be influenced using the --muhome
       parameter for mu-find(1) and mug(1).

AUTHOR

       Dirk-Jan C. Binnema <djcb@djcbsoftware.nl>

SEE ALSO

       mu(1) mu-find(1)

User Manuals							     May 2011							   MU-BOOKMARKS(5)
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