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Full Discussion: How to identify delimiter to find and replace a string with sed?
Top Forums UNIX for Beginners Questions & Answers How to identify delimiter to find and replace a string with sed? Post 303040453 by duke0001 on Tuesday 29th of October 2019 04:23:01 PM
Old 10-29-2019
How to identify delimiter to find and replace a string with sed?
I need to find and replace a date format in a SQL script with sed. The original lines are like this:

Code:
       ep.begin_date, ep.end_date, ep.facility_code,
       AND     ep.begin_date <= '01-JUL-2019'
                     ep.begin_date, ep.end_date, ep.facility_code,
       AND     ep.begin_date <= '01-JUL-2019'
                     ep.begin_date, ep.end_date, ep.facility_code,
       AND    ep.begin_date <= '01-JUL-2019'

Then I want to replace '01-JUL-2019' with variable which real value is '01-OCT-2019'. After replacement, the line in file should be like this:
AND ep.begin_date <= '01-OCT-2019'. I am not good at how to use sed to identify delimiter or separator and help sed to find right part of this string and replace it with right value. Please help with your code. My testing code is ugly so that I do not post them. I would like to learn from all of you. Thanks for help.
 

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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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