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Full Discussion: Using multiple gsub() function under a loop in awk
Top Forums Shell Programming and Scripting Using multiple gsub() function under a loop in awk Post 302894539 by useless79 on Wednesday 26th of March 2014 05:00:08 AM
Old 03-26-2014
Using multiple gsub() function under a loop in awk
Hi ALL,

I want to replace string occurrence in my file "Config" using a external file named "Mapping" using awk.

$cat Config
! Configuration file for RAVI
! Configuration file for RACHANA
! Configuration file for BALLU


$cat Mapping
ravi:ram
rachana:shyam
ballu:hameed

The expected output after running the awk script should be

! Configuration file for RAM
! Configuration file for SHYAM
! Configuration file for HAMMEED

For the out expected out I used awk as below.

Code:
$ awk ' {FS=":"} FNR==NR { array[$1]=$2; next  }  {FS=" "} FNR!=NR 
{ for (i in array)  IGNORECASE = 1 gsub("Configuration file for "i, "Configuration file for " array[i])    }1
'   Mapping   Config

And the output is coming as expected.
But when I use two gsub() functions (other one for an additional replacement)
one with IGNORECASE = 0 and other with IGNORECASE = 1. my second gsub("Configuration file for "i, "Configuration file for " array[i]) function is not working as expected.

Code:
$ awk ' {FS=":"} FNR==NR { array[$1]=$2; next  }  {FS=" "} FNR!=NR 
{ for (i in array)  gsub("^"i, array[i])   IGNORECASE = 1 gsub("Configuration file for "i, "Configuration file for " array[i])  }1
'   Mapping   Config


Can any one help me to know how to use two gsub() function under a for loop with first gsub() case sensitive and second one case insensitive search. Can any one help me improving the above code ?

Thanks in advance.....
 

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LEARN ABOUT DEBIAN

config::model::models::lcdd::cfontzpacket

Config::Model::models::LCDd::CFontzPacket(3pm)		User Contributed Perl Documentation	    Config::Model::models::LCDd::CFontzPacket(3pm)

NAME

       Config::Model::models::LCDd::CFontzPacket - Configuration class LCDd::CFontzPacket

VERSION

       version 2.021

DESCRIPTION

       Configuration classes used by Config::Model

       generated from LCDd.conf

Elements
   Model
       Select the LCD model Optional. Type enum. choice: '533', '631', '633', '635'. upstream_default: '633'.

   Device
       Select the output device to use Optional. Type uniline. upstream_default: '/dev/lcd'.

   Contrast
       Set the initial contrast Optional. Type integer. upstream_default: '560'.

   Brightness
       Set the initial brightness Optional. Type integer. upstream_default: '1000'.

   OffBrightness
       Set the initial off-brightness This value is used when the display is normally switched off in case LCDd is inactive. Optional. Type
       integer. upstream_default: '0'.

   Reboot
       Reinitialize the LCD's BIOS on driver start. Optional. Type enum. choice: 'yes', 'no'. upstream_default: 'no'.

   USB
       Enable the USB flag if the device is connected to an USB port. For serial ports leave it disabled. Optional. Type enum. choice: 'yes',
       'no'. upstream_default: 'no'.

   OldFirmware
       Very old 633 firmware versions do not support partial screen updates using 'Send Data to LCD' command(31). For those devices it may be
       necessary to enable this flag. Optional. Type enum. choice: 'yes', 'no'. upstream_default: 'no'.

   Size
       Override the LCD size known for the selected model. Usually setting this value should not be necessary.Optional. Type uniline. default:
       '20x4'.

   Speed
       Override the default communication speed known for the selected model.  Default value depends on model Optional. Type enum. choice:
       '19200', '115200'.

SEE ALSO

       o   cme

perl v5.14.2							    2012-11-09			    Config::Model::models::LCDd::CFontzPacket(3pm)
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