08-28-2010
deleting lines in a file that match a pattern without opening it
In Unix, how do I delete lines in a file that match a particular pattern without opening it. File contents are
foo line1
misc
whatever
foo line 2
i want to delete all lines that have the pattern "foo" without opening the file. File should eventually contain
misc
whatever
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LEARN ABOUT DEBIAN
moderators
MODERATORS(5) File Formats Manual MODERATORS(5)
NAME
moderators - mail addresses for moderated Usenet newsgroups
DESCRIPTION
The GetModeratorAddress(3) routine reads the file /etc/news/moderators to determine how to reach the moderator of a newsgroup. This is
used by inews(1) when an unapproved local posting is made to a moderated newsgroup.
The file is read until a match is found. Blank lines and lines starting with a number sign (``#'') are ignored. All other lines should
consist of two fields separated by a colon.
The first field is a wildmat(3)-style pattern. If it matches the name of the newsgroup, then the second field is taken to be a format
string for sprintf(3). This string should have at most one %s parameter, which will be given the name of the newsgroup with periods
transliterated to dashes.
Here is a sample file:
foo.important:announce-request@foo.com
foo.*:%s@mailer.foo.com
gnu.*:%s@prep.ai.mit.edu
*:%s@uunet.uu.net
Using the above file, postings to the moderated newsgroup in the left column will be sent to the address shown in the right column:
foo.important announce-request@foo.com
foo.x.announce foo-x-announce@mailer.foo.com
gnu.emacs.sources gnu-emacs-sources@prep.ai.mit.edu
comp.sources.unix comp-sources-unix@uunet.uu.net
HISTORY
Written by Rich $alz <rsalz@uunet.uu.net> for InterNetNews. This is revision 1.15, dated 1996/09/06.
SEE ALSO
inews(1), inn.conf(5), libinn(3), wildmat(3).
MODERATORS(5)