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Full Discussion: Update a specific line in a file while reading sequentially
Top Forums Shell Programming and Scripting Update a specific line in a file while reading sequentially Post 302421193 by bharath.gct on Thursday 13th of May 2010 05:55:25 PM
Old 05-13-2010
Update a specific line in a file while reading sequentially
All,

I know this is a very naive question but I could not find a way to get this working!

I have a file with values like

input.file

Code:
Value1
Value2
server1/mylogin,mypasswd
Value3
Value4

And in my code, I am reading the file line by line and processing it.

Code:
#! /bin/ksh
line_no=1;

while read line
do
  case $line_no in
  1) var1=$line;;
  2) var2=$line;;
  3) 
    logon_var=$line
    [I need to add my code here to update this line in the file
    [with masking text "SERVER/USERNAME,PASSWORD"]
  ;;
  4) var3=$line;;
  5) var4=$line;;
  esac

  line_no=`expr $line_no + 1`
done < input.file

echo $logon_var

Once after running the code I should see the file like:

input.file

Code:
Value1
Value2
SERVER/USERNAME,PASSWORD
Value3
Value4


Any help is greatly appreciated. Thanks

Bharath
 

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LEARN ABOUT DEBIAN

gpe-question

GPE-QUESTION(1) 						   gpe-question 						   GPE-QUESTION(1)

NAME

       gpe-question - GPE interface for asking questions from shell scripts.

SYNOPSIS

       gpe-question [---icon] name {--question "Question text"} {--buttons icon1:text1} [icon2:text2 ...]

DESCRIPTION

       This manual page was written for the Debian(TM) distribution because the original program does not have a manual page.

       gpe-question provides dialogues to raise a question within the GPE Palmtop Environment with cancel and ok buttons.

OPTIONS

       --question STRING
	  The question to ask the user via the dialogue.

       --buttons type:label
	  The type and label of the button(s) to be shown. Repeat for additional buttons.

EXAMPLES

       gpe-question "test" --question "Do you want to check first?"  --buttons YES:yes NO:no

AUTHOR

       This manual page was written by Neil Williams <codehelp@debian.org> for the Debian(TM) system (but may be used by others). Permission is
       granted to copy, distribute and/or modify this document under the terms of the GNU General Public License, Version 2 any later version
       published by the Free Software Foundation.

       On Debian systems, the complete text of the GNU General Public License can be found in /usr/share/common-licenses/GPL.

AUTHOR

       Moray Allen
	  Author.

COPYRIGHT

       Copyright (C) 2007 Neil Williams

Debian 1							 January 16, 2007						   GPE-QUESTION(1)
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