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Full Discussion: sed working on command line but file unchanged when execute with Shell script
Top Forums Shell Programming and Scripting sed working on command line but file unchanged when execute with Shell script Post 302962101 by hawkman2k on Tuesday 8th of December 2015 10:21:10 AM
Old 12-08-2015
sed working on command line but file unchanged when execute with Shell script
I have a simple task to replace unix line feed end of line characters with carriage returns.

When I run the following “change file in place” sed instruction from the command line all the Line feeds are successfully replaced with Carriage returns.

Code:
sed -i 's/$/\r/' lf_file.txt

But that same command when run within a shell the file remains unchanged.
Within the shell I do change directory first and tried a fully qualified path as well.
I also tried having sed create an new file with carriage returns with the same negative results.

I have a feeling has something do with standard in or standard out.

Do I need some sort of redirect, pipe or here document when invoking the sed command within the shell?

I recall needing to some like this years ago with a similar command.
Last edited by Scrutinizer; 12-08-2015 at 11:49 AM.. Reason: code tags
 

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LEARN ABOUT DEBIAN

fixnt

fixnt(1)							      Debian								  fixnt(1)

NAME

       fixnt - Filter for the Windows NT postscript printer driver.

SYNOPSIS

       fixnt < BADFILE.ps > GOODFILE.ps

DESCRIPTION

       The  Windows  NT  postscript  driver has a tendency to make broken postscript files, that are incompatible with psutils.  fixnt is a filter
       that fixes these problems, allowing the use of psnup(1).

       The filter takes the broken postscript file on stdin, and outputs a fixed postscript file on stdout.  It has no other form  for	invocation
       and takes no options on the command-line.

OPTIONS

       fixnt  takes no options.

BUGS

       fixnt does not check for NTPSOct94.  For a workaround, use a sed(1) command to replace 'NTPSOct94' with 'NTPSOct95', like so:
	      sed 's/NTPSOct94/NTPSOct95/g'
       This is particularly important for Windows NT 3.5 users.

AUTHOR

       fixnt   was   written   by   Holger   Bauer   <Holger.Bauer@topmail.de>,  Michael  Rath	<rath@itsm.uni-stuttgart.de>,  and  Akim  Demaille
       <demaille@inf.enst.fr>.

REPORTING BUGS

       Report bugs to the Authors, but avoid sending large postscript files.

       Patches are always welcome; send to <bauer@itsm.uni-stuttgart.de>.

SEE ALSO

       psnup(1), sed(1)

a2ps								   February 2003							  fixnt(1)
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