ShellScript for processing data

rosemolr · 11-03-2011, 06:26 AM

Hi guys,
i'am a linux newbie and i have to automate one task.say i have one file which is having hex contents like

09 7C 6B 54 23 56 8D

my script should read the data from the file and it should display the values associated with the hex values like
if value is 09 it should print
"09: invalid param"
"7C : Yes"

Please help me up guys

allend · 11-03-2011, 07:40 AM

This sounds like a beginners exercise in the C programming language.
Try googling for a C primer using getc, fgetc, fopen, printf

rosemolr · 11-03-2011, 07:55 AM

yup...like i said i'm a newbie..but if you guys can give me a spark on this..i can go ahead..please help me out

allend · 11-03-2011, 08:10 AM

Second google hit searching 'getc printf fopen'
http://www.crasseux.com/books/ctutor...and-fgetc.html

catkin · 11-03-2011, 08:26 AM

The subject is "ShellScript for processing data". Which shell will you be using? Can you convince us this is not homework? The LQ rules include "Do not expect LQ members to do your homework - you will learn much more by doing it yourself".

EDIT: what are "the values associated with the hex values" and what are the validity criteria? If the mapping is ASCII, 09 is not invalid -- it is a horizontal tab.

linuxwin2 · 11-04-2011, 02:34 AM

You can use script shell (bash).
You can use case;, in;, esac.

For example

Code:

#!/bin/bash

case $(var) in
    a) echo "aaaaaaaaaaaa";;
    b) echo "bbbbbbbbbbbb";;
    c) echo "ccccccccccc";;
    d) echo "dddd";;
     *) echo "other";;
esac

the hexa file have one line or more than one line?