Read data from a file in UNIX Script

[Trancemission]

I have a file that contains 1 number, i need to create a shell script that when ran will take the data in the file (1 number) and execute another program with the number passed in the command line

Cheers

 

[grega]

What about this?

myprogram `cat number_file`

Greg.

 

[boebox]

Here is a simple example:

Content of file:
100

#!/bin/sh

#Get the number in the file
FILE_NUMBER=`cat file`

#Pass it to another program, simple echo example
echo $FILE_NUMBER

exit 0


-Tony

 

[Trancemission]

I'm still getting problems, here is my script:

#!/usr/bin/sh
echo "Receieved Values $1"
echo "Executing Alarm Receptor"
/testing/alarmpt $1 'cat number'

This script reieves a variable, and then tries to execute /testing/alarmpt with the variable that was passed to it and also the number in the file 'number'

Hope you can help

Cheers

PS the echo's are just for debugging

 

[boebox]

What errors are you seeing?

The line below does not look right:

/testing/alarmpt $1 'cat number'

should be /testing/alarmpt $1 `cat number`

The quotes you used are wrong.


-Tony

 

[grega]

It looks like you have cat number inside apostrophes - ' ... change them to backticks - ` (above the TAB key).

Backticks tell the shell to execute the commands contained therein.

You can also use $(cat number) as an alternative to `cat number`

Greg.