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Top Forums Shell Programming and Scripting Single/Multiple Line with Special characters - Find & Replace in Unix Script Post 302426446 by r_sarnayak on Wednesday 2nd of June 2010 02:34:59 AM
Old 06-02-2010
Java Single/Multiple Line with Special characters - Find & Replace in Unix Script

Hi,

I am creating a script to do a find and replace single/multiple lines in a file with any number of lines.

I have written a logic in a script that reads a reference file say "findrep" and populates two variables $FIND and $REPLACE

print $FIND gives
Hi How r $u
Rahul()

Note: $FIND can contain one or multiple lines along with special characters

print $REPLACE gives
#Hi How r $u
#Rahul()
i am $fine
thanks()

Note: $REPLACE can contain one or multiple lines along with special characters

Now, I want to replace $FIND with $REPLACE in "introduction.sh". Can anyone help me in achieving this? i have gone through lot of threads and forums but no success.

I have tried below command but it did not work
Code:
sed "s/'$FIND'/'$REPLACE'/g" introduction.sh > introduction.sh.a
mv introduction.sh.a introduction.sh

Also tried below command
Code:
perl -pi -e "s:$FIND:$REPLACE:g" introduction.sh

Also, tried awk
Code:
awk '{gsub(a,b);print}' a="$FIND" b="$REPLACE" introduction.sh > introduction.sh.a
mv introduction.sh.a introduction.sh

But this gave an error as below
awk: syntax error near line 1
awk: illegal statement near line 1

Last edited by r_sarnayak; 06-02-2010 at 05:56 AM.. Reason: adding code tags
 

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ATF-SH(1)						    BSD General Commands Manual 						 ATF-SH(1)

NAME
atf-sh [-s shell] -- interpreter for shell-based test programs SYNOPSIS
atf-sh script DESCRIPTION
atf-sh is an interpreter that runs the test program given in script after loading the atf-sh(3) library. atf-sh is not a real interpreter though: it is just a wrapper around the system-wide shell defined by ATF_SHELL. atf-sh executes the inter- preter, loads the atf-sh(3) library and then runs the script. You must consider atf-sh to be a POSIX shell by default and thus should not use any non-standard extensions. The following options are available: -s shell Specifies the shell to use instead of the value provided by ATF_SHELL. ENVIRONMENT
ATF_LIBEXECDIR Overrides the builtin directory where atf-sh is located. Should not be overridden other than for testing purposes. ATF_PKGDATADIR Overrides the builtin directory where libatf-sh.subr is located. Should not be overridden other than for testing purposes. ATF_SHELL Path to the system shell to be used in the generated scripts. Scripts must not rely on this variable being set to select a specific interpreter. EXAMPLES
Scripts using atf-sh(3) should start with: #! /usr/bin/env atf-sh Alternatively, if you want to explicitly choose a shell interpreter, you cannot rely on env(1) to find atf-sh. Instead, you have to hardcode the path to atf-sh in the script and then use the -s option afterwards as a single parameter: #! /path/to/bin/atf-sh -s/bin/bash ENVIRONMENT
ATF_SHELL Path to the system shell to be used in the generated scripts. SEE ALSO
atf-sh(3) BSD
September 27, 2014 BSD
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