Bash scripting to find CPU info and perform action
 

Hi

I want to create a bash script that would take the CPU ID (either by looking in /proc/cpuinfo or by issuing a vmcp command) and then issuing a command (i.e. ifconfig ethx up).

I want to put this somewhere during the boot process.

Thanks!

So what have you done so far and where are you hitting problems?

Go on then...

Post it here when you get stuck and we'll help you get it fixed.

And I'm going to link ESR here:
http://www.catb.org/esr/faqs/smart-questions.html

Please do not expect a readymade script, as it will give you nothing to learn. But do some hit & trials, search over google, follow any guides... and then if you stuck with any command or syntax or symbols... then we're here to help you.

A shell script is nothing, but a list of commands, but in correct order.

In the meantime, I will give you some hints:

Thanks guys... though I've coded everything from Cobol to C++, I'm not too sure about shell scripting.

With that said, here is my embarrassing attempt:

#!/bin/bash
x = FF265
ID = (Not sure how to extract CPU ID from /proc/cpuinfo)

if (x = ID)
ifconfig eth0 up

else
ifconfig eth1 up

#!/bin/bash
x = FF265
ID = grep -w "FF265" /proc/cpuinfo

if (x = ID)
ifconfig eth0 up

else
ifconfig eth1 up


Now... any ideas on how I can test this?

#!/bin/bash
x=02FAC6
ID=$(grep -w "02FAC6" /proc/cpuinfo)
if [$x = $ID]; then
echo "02FAC6"
else
echo "not 02FAC6"
fi


Its not liking the comparison on line 4?

./HANetwork.sh: line 4: [02FAC6: command not found[COLOR="Silver"]

should be
http://tldp.org/LDP/abs/html/

That did the trick... and thank you for the links. Good reference tools.

This is what I ended up with and it is exactly what I'm looking for. Thanks again for all your help... sorry if the initial question was bad.

#!/bin/bash
#
# Used to extract CPU ID from /proc/cpuinfo
# Compares with x and based on that starts appropriate
# Network Interface
#
x='02FAC6'
ID=$(grep -i -r -o -m 1 '02FAC6' /proc/cpuinfo)
if [[ "$x" = "$ID" ]]; then
ifconfig eth0 up
else
ifconfig eth1 up
fi

slightly cleaner and ifup rather than ifconfig.

Shell is a subtle beast, there's lots of nuances and tricks that are easiest to pick up from a good book.
This is the one on my bookshelf:
http://www.amazon.com/Unix-Shell-Pro.../dp/0672324903