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Full Discussion: UNIX script URGENT!!!
Homework and Emergencies Emergency UNIX and Linux Support UNIX script URGENT!!! Post 302475505 by beginner1988 on Monday 29th of November 2010 03:11:55 AM
Old 11-29-2010
UNIX script URGENT!!!
Code:
#!/bin/sh

INPUT () {
    echo "Please enter line number: "
    read LINE

    echo "Please enter column number that you want to modify: "
    read COLUMN

    head -$LINE dataf > line1;
    LINE=`expr $LINE + 1`
    head -$LINE dataf > line2;

    diff line1 line2 > tmp;
    sed -e 's/;/ /g' tmp > tmp2;
    COLUMN=`expr $COLUMN + 1`
    OLDV=`awk '{printf "%s\n",$'$COLUMN' ; }' tmp2`
    echo "The value is $OLDV \n"

    echo "Please enter new value of the column: "
    read NEWV
    sed -e 's/$OLDV/$NEWV/g' tmp2 > tmp3

}

OthersMod () {
    echo "Do you want to do other modifications [y/n]?"
    read ANS

while [ "$ANS" = y ] 
do

    INPUT
    OthersMod 

done
}


INPUT
OthersMod



This is the whole script. The problem is:
Code:
    echo "Please enter new value of the column: "
    read NEWV
    sed -e 's/$OLDV/$NEWV/g' tmp2 > tmp3

I can't change the old value to the new value. Any wrong with the script?? Please help.. THANKS!

Moderator's Comments:
Mod Comment use code tags, please!
 

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LEARN ABOUT DEBIAN

rnano

RNANO(1)						      General Commands Manual							  RNANO(1)

NAME

       rnano - Restricted mode for Nano's ANOther editor, an enhanced free Pico clone

SYNOPSIS

       rnano [OPTIONS] [[+LINE,COLUMN] FILE]...

DESCRIPTION

       This manual page briefly documents the rnano command.

       nano is a small, free and friendly editor which aims to replace Pico, the default editor included in the non-free Pine package. Rather than
       just copying Pico's look and feel, nano also implements some missing (or disabled by  default)  features  in  Pico,  such  as  "search  and
       replace" and "go to line and column number".

       rnano  is  a  restricted  version of nano, which only edits specific files and doesn't allow the user access to the filesystem or a command
       shell.

       In restricted mode, nano will not:

       o read or write to any file not specified on the command line;

       o read any nanorc files;

       o allow suspending;

       o allow a file to be appended to, prepended to, or saved under a different name;

       o use backup files or spell checking.

OPTIONS

       +LINE,COLUMN
	      Places cursor at line number LINE and column number COLUMN (at least one of which must be specified)  on	startup,  instead  of  the
	      default of line 1, column 1.

       -?     Same as -h (--help).

       -h (--help)
	      Show a summary of command line options and exit.

       -V (--version)
	      Show the current version number and exit.

       See the nano(1) manpage for the complete documentation of nano.

BUGS

       Please send any comments or bug reports to nano@nano-editor.org.

       The nano mailing list is available from nano-devel@gnu.org.

       To subscribe, email to nano-devel-request@gnu.org with a subject of "subscribe".

HOMEPAGE

       http://www.nano-editor.org/

AUTHOR

       Chris  Allegretta  <chrisa@asty.org>,  et  al  (see  AUTHORS  for  details).   This  manual  page was originally written by Thijs Kinkhorst
       <thijs@kinkhorst.com>, for the Debian system (but may be used by others).

August 23, 2007 						   version 2.0.0							  RNANO(1)
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