12-07-2010
Replace multiple strings in a file.
Hello Freinds,
Hope, you all are doing well.
I have to replace the static strings from one file (File 1) with the dynamic strings from the another file (File2). I've written a shell script for this.Below is the contents.
HTML Code:
while read line
do
field[0]=`echo $line | awk '{print $1}'`
field[1]=`echo $line | awk '{print $2}'`
field[2]=`echo $line | awk '{print $3}'`
sed -e "s/Contact_FirstName/`echo ${field[0]}`/g;s/Contact_LastName/`echo ${field[1]}`/g;s/Email_ID/`echo ${field[2]}`/g" File1 > File3
done < File2
~
.
I am using both awk and sed to serve my purpose and the script is working as expected.
I just wanted to know if there is any better way to achieve this.
Please suggest!!
Thanks,
Chandan Singh
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LEARN ABOUT REDHAT
replace
REPLACE(1) General Commands Manual REPLACE(1)
NAME
replace - A utility program that is used by msql2mysql, but that has more general applicability as well. replace changes strings in place
in files or on the standard input. Uses a finite state machine to match longer strings first. Can be used to swap strings.
USAGE
replace [-?svIV] from to from to ... -- [files]
or
replace [-?svIV] from to from to ... < fromfile > tofile
SYNOPSIS
replace [-?|-I] [-s] [-v]
DESCRIPTION
replace
-?|-I info
-s silent
-v verbose
EXTRA INFO
Special characters in from string:
^ Match start of line.
$ Match end of line.
Match space-character, start of line or end of line. For a end the next replace starts locking at the end space-character. A
alone in a string matches only a space-character.
EXAMPLE
this command swaps a and b in the given files:
shell> replace a b b a -- file1 file2 ...
SEE ALSO
isamchk (1), isamlog (1), mysqlaccess (1), mysqladmin (1), mysqlbug (1), mysqld (1), mysqldump (1), mysqlshow (1), msql2mysql (1), perror
(1), replace (1), safe_mysqld (1), which1 (1), zap (1),
AUTHOR
Ver 1.0, distribution 3.23.29a Michael (Monty) Widenius (monty@tcx.se), TCX Datakonsult AB (http://www.tcx.se). This software comes with
no warranty. Manual page by L. (Kill-9) Pedersen (kill-9@kill-9.dk), Mercurmedia Data Model Architect / system developer (http://www.mer-
curmedia.com)
20 December 2000 REPLACE(1)