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Full Discussion: How to insert a '#' in the first position of all the files?
Top Forums Shell Programming and Scripting How to insert a '#' in the first position of all the files? Post 302842801 by anand787 on Saturday 10th of August 2013 11:48:23 AM
Old 08-10-2013
Reference How to insert a '#' in the first position of all the files?
Hi All,

how to insert a '#' in the first position of all the files based on a certain condition.

I tried this:

Code:
cat /bin/user/input_file.txt | while read a 
do
b=`sed 's/.*song=good.*/\#&/g' $a `
echo $b > /bin/user/new/output_file.txt
done

input_file.txt has list of names of 10 files.. the sed condition will check all the files and search for the condition (song=good) and then inserts a # and then redirects the output to a new directory and a new file output_file.txt..

when i ran this,i am not able to get the desired output.

required output:

file 1:
Code:
1.elvis presly 1,5,6,song=bad;
#2.richie,2,6,8,song=good;
3.benaud,3,9,8,song=bad;

output which i am getting:

Code:
1.elvis presly 1,5,6,song=bad; #2.richie,2,6,8,song=good; 3.benaud,3,9,8,song=bad;

please help me on this
Last edited by Don Cragun; 08-10-2013 at 11:22 PM.. Reason: Add CODE and ICODE tags.
 

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LEARN ABOUT DEBIAN

rpld-delplaylist

rpld-*(1)					       System User's Manual: rpld-deprecated						 rpld-*(1)

NAME

       rpld-deprecated - Deprecated RoarAudio PlayList Daemon control programs

SYNOPSIS

       rpld-play

       rpld-stop

       rpld-next [--ifcurple PLE]

       rpld-prev

       rpld-addplaylist PLI

       rpld-delplaylist PLI

       rpld-store

DESCRIPTION

       The  RoarAudio  PlayList  Daemon is a daemon which manages playlists and can play files or streams from those lists using a RoarAudio Sound
       Server.

       This is a set of deprecated tools to do simple control of the server.  All those tools has be replaced by rpld-ctl(1).

       The following tools are deprecated:

       rpld-play
	      Start playback if not yet started.

	      Replaced by: rpld-ctl play

       rpld-stop
	      Stop playback.

	      Replaced by: rpld-ctl stop

       rpld-next [--ifcurple PLE]
	      Skip current song.

	      if --ifcurple and a PLE is given the song is only skiped if the currently played song matches the given PLE.

	      This tool has only been deprecated in case --ifcurple is not used.  Replaced by: rpld-ctl next

       rpld-prev
	      Go back to previous song.

	      Replaced by: rpld-ctl prev

       rpld-addplaylist PLI
	      Add playlist with name PLI.

	      Replaced by: rpld-ctl addplaylist PLI

       rpld-delplaylist PLI
	      Delete playlist PLI.

	      Replaced by: rpld-ctl delplaylist PLI

       rpld-store
	      Store current state to disk.

	      This tool should not be needed to be called by a user at all for normal use cases.

	      Replaced by: rpld-ctl store

SEE ALSO

       rpld-tools(1), rpld(7), RoarAudio(7).

HISTORY

       For history information see RoarAudio(7).

rpld-deprecated 						     May 2012								 rpld-*(1)
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