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Full Discussion: Using sed command replace date variable in unix
Top Forums Shell Programming and Scripting Using sed command replace date variable in unix Post 302626449 by jannusuresh on Thursday 19th of April 2012 11:36:33 AM
Old 04-19-2012
Thanks ygemici(sed_shell@LNU)

The following script worked well for me.
Code:
sed "s#insert#insert = $STR1#g" filename

resulting as
Code:
insert = 04/18/2012 11:38:55

Thanks
Suresh

---------- Post updated at 07:56 PM ---------- Previous update was at 07:42 PM ----------

I tested sed "s/insert/$(echo ${STR1//\//\\\/})/g" file
as well, working fine to me. Giving the same result as sed "s#insert#$STR1#g" file

Thanks to ygemici & all.
Thanks|Suresh

---------- Post updated at 09:06 PM ---------- Previous update was at 07:56 PM ----------

Hi,
Thanks for your previous posts. I have another requirement with little different output. The sed "s#IncludeDateTime =#IncludeDateTime =$STR1#g" file1.
This is appending the new value to the existing value. what I want is the existing value removed and assign new value. eg. $$IncludeDateTime =04/18/2012 11:38:55 01/01/2011 10:55:37. So what I want from the above command is $$IncludeDateTime =04/18/2012 11:38:55 and should not append the exising value 01/01/2011 10:55:37.

Or exising entire line should be removed and new line to be added with the new results.

Can any one please help in this regard.
Heartful Thanks to all in advance. Thanks | Suresh
Last edited by Scrutinizer; 04-19-2012 at 11:15 AM.. Reason: code tags
 

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LEARN ABOUT DEBIAN

shtool-subst

SHTOOL-SUBST.TMP(1)					      GNU Portable Shell Tool					       SHTOOL-SUBST.TMP(1)

NAME

       shtool-subst - GNU shtool sed(1) substitution operations

SYNOPSIS

       shtool subst [-v|--verbose] [-t|--trace] [-n|--nop] [-w|--warning] [-q|--quiet] [-s|--stealth] [-i|--interactive] [-b|--backup ext]
       [-e|--exec cmd] [-f|--file cmd-file] [file] [file ...]

DESCRIPTION

       This command applies one or more sed(1) substitution operations to stdin or any number of files.

OPTIONS

       The following command line options are available.

       -v, --verbose
	   Display some processing information.

       -t, --trace
	   Enable the output of the essential shell commands which are executed.

       -n, --nop
	   No operation mode. Actual execution of the essential shell commands which would be executed is suppressed.

       -w, --warning
	   Show warning on substitution operation resulting in no content change on every file. The default is to show a warning on substitution
	   operations resulted in no content change on all files.

       -q, --quiet
	   Suppress warning on substitution operation resulting in no content change.

       -s, --stealth
	   Stealth operation. Preserve timestamp on file.

       -i, --interactive
	   Enter interactive mode where the user has to approve each operation.

       -b, --backup ext
	   Preserve backup of original file using file name extension ext.  Default is to overwrite the original file.

       -e, --exec cmd
	   Specify sed(1) command directly.

       -f, --file cmd-file
	   Read sed(1) command from file.

EXAMPLE

	#   shell script
	shtool subst -i -e 's;(c) ([0-9]*)-2000;(c) 1-2001;' *.[ch]

	#    RPM spec-file
	%install
	    shtool subst -v -n 
		-e 's;^(prefix=).*;1 $RPM_BUILD_ROOT%{_prefix};g' 
		-e 's;^(sysconfdir=).*;1 $RPM_BUILD_ROOT%{_prefix}/etc;g' 
		`find . -name Makefile -print`
	    make install

HISTORY

       The GNU shtool subst command was originally written by Ralf S.  Engelschall <rse@engelschall.com> in 2001 for GNU shtool.  It was prompted
       by the need to have a uniform and convenient patching frontend to sed(1) operations in the OpenPKG package specifications.

SEE ALSO

       shtool(1), sed(1).

18-Jul-2008							   shtool 2.0.8 					       SHTOOL-SUBST.TMP(1)
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