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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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Prima::KeySelector(3)					User Contributed Perl Documentation				     Prima::KeySelector(3)

NAME
Prima::KeySelector - key combination widget and routines DESCRIPTION
The module provides a standard widget for selecting a user-defined key combination. The widget class allows import, export, and modification of key combinations. The module provides a set of routines, useful for conversion of a key combination between representations. SYNOPSIS
my $ks = Prima::KeySelector-> create( ); $ks-> key( km::Alt | ord('X')); print Prima::KeySelector::describe( $ks-> key ); API
Properties key INTEGER Selects a key combination in integer format. The format is described in "Hot key" in Prima::Menu, and is a combination of "km::XXX" key modifiers and either a "kb::XXX" virtual key, or a character code value. The property allows almost, but not all possible combinations of key constants. Only "km::Ctrl", "km::Alt", and "km::Shift" modifiers are allowed. Methods All methods here can ( and must ) be called without the object syntax; - the first parameter must not be neither package nor widget. describe KEY Accepts KEY in integer format, and returns string description of the key combination in human readable format. Useful for supplying an accelerator text to a menu. print describe( km::Shift|km::Ctrl|km::F10); Ctrl+Shift+F10 export KEY Accepts KEY in integer format, and returns string with a perl-evaluable expression, which after evaluation resolves to the original KEY value. Useful for storing a key into text config files, where value must be both human readable and easily passed to a program. print export( km::Shift|km::Ctrl|km::F10); km::Shift|km::Ctrl|km::F10 shortcut KEY Converts KEY from integer format to a string, acceptable by "Prima::AbstractMenu" input methods. print shortcut( km::Ctrl|ord('X')); ^X translate_codes KEY, [ USE_CTRL = 0 ] Converts KEY in integer format to three integers in the format accepted by "KeyDown" in Prima::Widget event: code, key, and modifier. USE_CTRL is only relevant when KEY first byte ( "KEY & 0xFF" ) is between 1 and 26, what means that the key is a combination of an alpha key with the control key. If USE_CTRL is 1, code result is unaltered, and is in range 1 - 26. Otherwise, code result is converted to the character code ( 1 to ord('A'), 2 to ord('B') etc ). AUTHOR
Dmitry Karasik, <dmitry@karasik.eu.org>. SEE ALSO
Prima, Prima::Widget, Prima::Menu. perl v5.14.2 2009-02-24 Prima::KeySelector(3)
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