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Top Forums UNIX for Dummies Questions & Answers multiple input search and replace script Post 302111595 by dennis.jacob on Thursday 22nd of March 2007 12:26:52 AM
Old 03-22-2007
For your qn1,
below one will be a solution...

read oldval
read newval
while read line
do
{
sed 's/'$oldval'/'$newval'/g' $line >$line".new"
}
done<list.txt

For your qn2.,
I believe there is no other way other than creating a temp file which contains the output of sed command and then renaming it to the original filename...
 

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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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