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Full Discussion: How to append a value to the output after using sed command?
Top Forums Shell Programming and Scripting How to append a value to the output after using sed command? Post 302819411 by rajeevm on Monday 10th of June 2013 07:42:51 PM
Old 06-10-2013
How to append a value to the output after using sed command?
Hi All,

I have a file where I am converting newlines to comma separated values but I would like to append zero if the output is empty

Here is the command I am using
Code:
sed -n -e 'H;${x;s/\n/,/g;s/^,//;p;}' test1.txt

test1.txt will have comma seperated values but sometimes this file can be empty so I wanted to append 0 to this file how could I do this.

I appreciate your help.

Regards,
raj
Last edited by Franklin52; 06-11-2013 at 08:22 AM.. Reason: Please use code tags
 

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LEARN ABOUT MOJAVE

rcvpack

RCVPACK(1)							     [nmh-1.5]								RCVPACK(1)

NAME

       rcvpack - append message to file

SYNOPSIS

       /usr/lib/mh/rcvpack file [-mbox] [-mmdf] [-version] [-help]

DESCRIPTION

       The rcvpack program will append a copy of the message to the file listed on its command line.

       If the -mbox switch is given (the default), then the messages are separated using mbox (uucp) style delimiters.	This is the format used by
       most mail clients (elm, mailx, etc.).

       If the -mmdf switch is given, then the messages are separated by mmdf style delimiters.	Each message in the  file  is  separated  by  four
       CTRL-A's and a newline.

       rcvpack will correctly lock and unlock the file to serialize access to the file, when running multiple copies of rcvpack .

       In general, its use is obsoleted by the file action of slocal, although it might still have occasional uses in various shell scripts.

FILES

       /etc/nmh/mts.conf	  nmh mts configuration file

SEE ALSO

       rcvdist(1), rcvstore(1), rcvtty(1), slocal(1)

BUGS

       Only two return codes are meaningful, others should be.

MH.6.8								   11 June 2012 							RCVPACK(1)
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