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Top Forums Shell Programming and Scripting Append string at start of line Post 302510894 by db2cap on Tuesday 5th of April 2011 09:25:21 AM
Old 04-05-2011
Code:
printf '/hotbackup/s!^!#!g\n1,$~\nwq!\n' | ex -s myFile

This is appending # on every line Smilie

Code:
printf '/hotbackup/s!^!#!g\nwq!\n' | ex -s myFile

This is working but not appending globally. It is only working on the line where it first finds the keyword and does not consider the rest of the file.
Sorry for I did not see it before as the file was huge and I cross checked the end page of it
 

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VORBISCOMMENT(1)						   Vorbis Tools 						  VORBISCOMMENT(1)

NAME
vorbiscomment - edits Ogg Vorbis comments SYNOPSIS
vorbiscomment [-l] file.ogg vorbiscomment -a [ -t "tag=value" ] in.ogg out.ogg vorbiscomment -w in.ogg out.ogg DESCRIPTION
vorbiscomment reads, modifies, and appends Ogg Vorbis audio file metadata tags. OPTIONS
-a Append comments. -c commentfile Take comments from a file. The file is the same format as is output by the the -l option: one element per line in 'tag=value' for- mat. -h Show command help. -l List the comments in the ogg vorbis file. -q Quiet mode. No messages are displayed. -t 'tag=value' Specify a new tag on the command line. Each tag is given as a single string. The part before the '=' is treated as the tag name and the part after as the value. -w Replace comments with the new set given either on the command line with -t or from a file with -c. EXAMPLES
To just see what comment tags are in a file: vorbiscomment -l file.ogg To edit those comments: vorbiscomment -l file.ogg > file.txt [edit the comments in file.txt to your statisfaction] vorbiscomment -w -c file.txt file.ogg newfile.ogg To simply add a comment: vorbiscomment -a -t 'ARTIST=No One You Know' file.ogg newfile.ogg SEE ALSO
See http://xiph.org/ogg/vorbis/doc/v-comment.html for documentation on the Ogg Vorbis tag format, including a suggested list of canonical tag names. AUTHORS
Program Authors: Michael Smith <msmith@labyrinth.net.au> Ralph Giles <giles@xiph.org> Manpage Author: Christopher L Cheney <ccheney@debian.org> Xiph.org Foundation December 24, 2001 VORBISCOMMENT(1)
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