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Top Forums Shell Programming and Scripting Using sed in ksh to find and replace string Post 302656283 by pandeyra on Thursday 14th of June 2012 11:50:46 AM
Old 06-14-2012
Using sed in ksh to find and replace string

Hi All,

I have a file in which contains location of various data files. I want to change locations using sed. Find and replace strings are in a separate file. Content of this file (/tmp/tt) -
Code:
/dd/pp/test/test/1/ /pp/aa/test/dg1/
/dd/pp/test/test/2/ /pp/aa/test/dg2/
/dd/pp/test/test/3/ /pp/aa/test/dg3/

This is how I am trying to get desired result-
Code:
cat /tmp/tt | while read LINE
do
  FND=`echo $LINE | awk '{print $1}'`
  REP=`echo $LINE | awk '{print $2}'`
  sed "s=/${FND}=${REP}=" /tmp/ccf_temp.sql > /tmp/tmp.sql && mv /tmp/tmp.sql /tmp/ccf_temp.sql
done

Above is not working. However on command line if I give find and replace string directly, sed is working fine. For example below is fine
Code:
$>sed "s/dd/pp/test/test/1//pp/aa/test/dg1/=" /tmp/ccf_temp.sql > /tmp/tmp.sql


So I believe it is the variable that is cauing issue.

Can someone help please.

Thanks in advance for your time

Last edited by Franklin52; 06-15-2012 at 04:34 AM.. Reason: Please use code tags for data and code samples
 

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DEBUG_PRINT_BACKTRACE(3)						 1						  DEBUG_PRINT_BACKTRACE(3)

debug_print_backtrace - Prints a backtrace

SYNOPSIS
void debug_print_backtrace ([int $options], [int $limit]) DESCRIPTION
debug_print_backtrace(3) prints a PHP backtrace. It prints the function calls, included/required files and eval(3)ed stuff. PARAMETERS
o $options - As of 5.3.6, this parameter is a bitmask for the following options: debug_print_backtrace(3) options +----------------------------+---------------------------------------------------+ |DEBUG_BACKTRACE_IGNORE_ARGS | | | | | | | Whether or not to omit the "args" index, and | | | thus all the function/method arguments, to save | | | memory. | | | | +----------------------------+---------------------------------------------------+ o $limit - As of 5.4.0, this parameter can be used to limit the number of stack frames printed. By default ($limit= 0) it prints all stack frames. RETURN VALUES
No value is returned. CHANGELOG
+--------+-----------------------------------------+ |Version | | | | | | | Description | | | | +--------+-----------------------------------------+ | 5.4.0 | | | | | | | Added the optional parameter $limit. | | | | | 5.3.6 | | | | | | | Added the optional parameter $options. | | | | +--------+-----------------------------------------+ EXAMPLES
Example #1 debug_print_backtrace(3) example <?php // include.php file function a() { b(); } function b() { c(); } function c(){ debug_print_backtrace(); } a(); ?> <?php // test.php file // this is the file you should run include 'include.php'; ?> The above example will output something similar to: #0 c() called at [/tmp/include.php:10] #1 b() called at [/tmp/include.php:6] #2 a() called at [/tmp/include.php:17] #3 include(/tmp/include.php) called at [/tmp/test.php:3] SEE ALSO
debug_backtrace(3). PHP Documentation Group DEBUG_PRINT_BACKTRACE(3)
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