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Full Discussion: Change value in a textFile
Top Forums Shell Programming and Scripting Change value in a textFile Post 302765191 by Xedrox on Friday 1st of February 2013 03:51:21 PM
Old 02-01-2013
Change value in a textFile
Hi everyone,

I need to make a script to take three parameters:

-> KEY
-> NEW_VALUE
-> FILE

The FILE is a text plane file.
The KEY is a variable to configure, for example:

Code:
KEY1   =    HOLA
KEY2=   HOLA
KEY3=HELLO
KEY4           =HOLA

And the NEW_VALUE is the string next to symbol "=".

The script must change a value of a "KEY". For example, supose i have the next file:

Code:
KEY1   =    HOLA
KEY2   =   HOLA
KEY3   =HELLO
KEY4           =HOLA

I execute the next comand: ./script 'KEY2' 'BAZINGA' 'myFile.txt'

The result must be:

Code:
KEY1   =    HOLA
KEY2   =BAZINGA
KEY3   =HELLO
KEY4           =HOLA

I did the next script:

Code:
CLAVE=$1
NEWVALUE=$2
ARCHIVO_DESTINO=$3

if [ ! -f $ARCHIVO_DESTINO ]
then
	echo "ERROR EN CHANGE_VALUE_CONFIG, NO se encontro el archivo: $ARCHIVO_DESTINO"
	exit 1
fi


awk -F= -v P1="$CLAVE" -v P2="$NEWVALUE" '$1==P1{$0=P2}1' $ARCHIVO_DESTINO > temporalConfig

rm $ARCHIVO_DESTINO
mv temporalConfig $ARCHIVO_DESTINO

The problem is: just works well, when there is not space between "KEY" and "=" and "VALUE". For example "KEY1=HOLA". I need to this work with the next format "KEY1 =HOLA". How can i change my script?

Thanks!
Sorry for my english!
 

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LEARN ABOUT DEBIAN

test::data::hash

Hash(3pm)						User Contributed Perl Documentation						 Hash(3pm)

NAME

       Test::Data::Hash -- test functions for hash variables

SYNOPSIS

	       use Test::Data qw(Hash);

DESCRIPTION

       This modules provides a collection of test utilities for hash variables.  Load the module through Test::Data.

   Functions
       exists_ok( KEY, HASH [, NAME] )
	   Ok if the value for KEY in HASH exists.  The function does not create KEY in HASH.

       not_exists_ok( KEY, HASH [, NAME] )
	   Ok if the value for KEY in HASH does not exist.  The function does not create KEY in HASH.

       hash_value_defined_ok( KEY, HASH [, NAME] )
	   Ok if the value for KEY in HASH is defined.	The function does not create KEY in HASH.

       hash_value_undef_ok( KEY, HASH [, NAME] )
	   Ok if the value for KEY in HASH is undefined.  The function does not create KEY in HASH.

       hash_value_true_ok( KEY, HASH [, NAME] )
	   Ok if the value for KEY in HASH is true.  The function does not create KEY in HASH.

       hash_value_false_ok( KEY, HASH [, NAME] )
	   Ok if the value for KEY in HASH is false.  The function does not create KEY in HASH.

SEE ALSO

       Test::Data, Test::Data::Array, Test::Data::Function, Test::Data::Scalar, Test::Builder

SOURCE AVAILABILITY

       This source is in Github:

	       http://github.com/briandfoy/test-data/tree/master

AUTHOR

       brian d foy, "<bdfoy@cpan.org>"

COPYRIGHT AND LICENSE

       Copyright (c) 2002-2009 brian d foy.  All rights reserved.

       This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

perl v5.14.2							    2009-02-12								 Hash(3pm)
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