[bash] problem with a script

MD3 · 04-05-2005, 10:28 AM

please.. have a look to this script:

Code:

#!/bin/bash

echo "mknod c `insmod my_dev.o` 0"

the command "insmod my_dev.o" produces "245" as output... so i expected to see

Code:

mknod c 245 0

when executing the script... but what i can see is

Code:

245
mknod c  0

why? and how can i obtain the desired result? thanks e.b.

MD3 · 04-05-2005, 11:01 AM

i think i understood the problem:
"245" is NOT the output of insmod, but it's output from my_dev.o itself with a printk() C function...
now.. how can i use that output as a major number on mknod?

thanks

bigrigdriver · 04-05-2005, 11:37 AM

The example in this link should answer your question.

MD3 · 04-05-2005, 01:49 PM

emh.. i thank you for the time you spent.. but i think this is not what i'm actually looking for.. i'll try to explain better my problem. i know how to use the mknod command... i'd like to know how to redirect the output generated by a module (with the printk() fuction) to the stdin to use it as the 3rd parameter of mknod

thanks again and bye