Shell Programming and Scripting

Hello
I need to search for a mult-line strngs(with spaces in between and qoted) in a file1 and replace that text with Fixed string globally in file1. The strng to search for is in file2.

The file is big with some 20K records. so speed and effciency is required

file1: (where srch & rplc will happen) e;g lets say 5 lines in file are;

Thebare book_names='Unix1 Best' and then editor_ranks='Honsun' where live.
Science is another Line_no1='Number Whole' and look for ppl and data
Lets have person='Noro' and past Noro and Unix1
This is nothing to do
Next line is Honsun

file2string to be srched)
book_names
editor_ranks
Line_no1
person

I need to replce all these strgs value with XXX. Also need to replace all occurances of these values globaly in file.

Expetd file:
Thebare book_names=XXX and then editor_ranks=XXX where live.
Science is another Line_no1=XXX and look for ppl and data
Lets have person=XXX and past XXX and XXX
This is nothing to do
Next line is XXX

Any ideas? Need urgnt help

Try the following shell scrpit

Code:

 
sed -e "s:^:s/\\(:" -e "s:$:=\\)'[^']*'/\\1XXX/g:" file2 > file3
sed -f file3 file1 > Expected_file

Try this,

Code:

#!/usr/bin/perl
undef $/;
open(FH1,"<","file1") or die "canot open file 1\n";
open(FH2,"<","file2")  or die "canot open file 2\n";
$data=<FH1>;
$/="\n";
while(<FH2>) {
        chop;
        $data=~s/$_='(.+?)'\s/$_=XXX /g;
        $data=~s/$1/XXX/g;
        }
print $data;
close(FH1);
close(FH2);

Invocation

Code:

 perl perlscript.pl

Thanks Pravinn for the reply...
But the script is not running properly..

i invoked it with perl script.pl

but not working.i have checked the perl installed on my machine and its okay. pls help

---------- Post updated at 06:41 AM ---------- Previous update was at 06:38 AM ----------


Thanks for quick reply, I tried running this script but giving teh below error:

sed: -e expression #2, char 26: invalid reference \1 on `s' command's RHS

also,
File1 is the input file to be replaced
File2 has the list of strings to be searched.

pls let me know what is File 3 in the sed script u provided.

Thanks

Hello,

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Write following lines in a file say sed.script:

Code:

 
s:^:s/\\(:
s:$:=\\)'[^']*'/\\1XXX/g:

Then invoke the following in a shell script:

Code:

 
sed -f sed.script  file2 > file3
sed -f file3 file1 > Expected_file

file3 is an intermediate file that's being created in the first sed invoked.

Hi Hiano,

Please post error messages which you are facing while executing script.