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Top Forums Shell Programming and Scripting Clarification needed for a SED one liner Post 302478452 by kevintse on Wednesday 8th of December 2010 03:29:06 AM
Old 12-08-2010
Clarification needed for a SED one liner

I want to use SED to replace all new line characters of a file, I googled and found this one liner
Code:
sed '{:q;N;s/\n//g;t q}' infile

what do :q;N; and t q mean in this script?
 

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TRANSMISSION-EDIT(1)					    BSD General Commands Manual 				      TRANSMISSION-EDIT(1)

NAME
transmission-edit -- command-line utility to modify .torrent files' announce URLs SYNOPSIS
transmission-edit [-h] [-a url] [-d url] [-r search replace] torrentfile(s) DESCRIPTION
transmission-edit command-line utility to modify .torrent files' announce URLs OPTIONS
-h --help Show a short help page and exit. -a --add URL Add an announce URL to the torrent's announce-list if it's not already in the list -d --delete URL Remove an announce URL from the torrent's announce-list -r --replace search replace Substring search-and-replace inside a torrent's announce URLs. This can be used to change an announce URL when the tracker moves or your passcode changes. EXAMPLES
Update a tracker passcode in all your torrents: $ transmission-edit -r old-passcode new-passcode ~/.config/transmission/torrents/*.torrent AUTHORS
Jordan Lee SEE ALSO
transmission-create(1), transmission-daemon(1), transmission-edit(1), transmission-gtk(1), transmission-qt(1), transmission-remote(1), transmission-show(1) http://www.transmissionbt.com/ BSD
June 9, 2010 BSD
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