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Full Discussion: sed delimiter error
Top Forums Shell Programming and Scripting sed delimiter error Post 302812539 by Don Cragun on Sunday 26th of May 2013 07:07:12 AM
Old 05-26-2013
Quote:
Originally Posted by c19h28O2
Hi,

I'm having a bit of trouble replacing sed's delimiter from a slash to a pipe.

This works...

Code:
sed '/INSERT INTO/s/\${TD_LOAD_DB}/NUC_PL_LOAD/g' sql_file.sql

But this doesn't

Code:
sed "|INSERT INTO|s|\${TD_LOAD_DB}|NUC_PL_LOAD|g" sql_file.sql

Although if i remove the INSERT INTO pattern, the delimiter works...

Code:
sed 's|\${TD_LOAD_DB}|NUC_PL_LOAD|g' sql_file.sql

Any ideas?
When using a character other than slash character ("/") as the delimiter in a context address, the first delimiter must be preceded by a backslash character ("\"), so try:
Code:
sed "\|INSERT INTO|s|\${TD_LOAD_DB}|NUC_PL_LOAD|g" sql_file.sql

Since there is no / in "INSERT INTO", why not use the default delimiter? (Note that the delimiter used for the context address and the delimiter used in the substitute command do not have to be the same character.)

Assuming that you're trying to search for the string specified by the variable TD_LOAD_DB, why do you have the backslash before the dollar sign?
These 2 Users Gave Thanks to Don Cragun For This Post:
c19h28O2 Scott
 

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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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