On Fri, Mar 11, 2005 at 10:32:20PM -0500, 404 wrote:
> As you can see from my last post, I want to learn to code. I have been
> using bash scripts to do stuff on my system but I would like to be able
> to code it to an actual program. Example:
>
> #!/bin/bash
> CAT=/bin/cat
> ECHO=/bin/echo
> GREP=/bin/grep
>
> $ECHO "[------- Battery Info ---------]"
> $CAT /proc/omnibook/battery | $GREP Stat
> $CAT /proc/omnibook/battery | $GREP Gau
> $CAT /proc/omnibook/ac
> $ECHO "[------- Fan and Temp ---------]"
> $CAT /proc/omnibook/temperature
> $CAT /proc/omnibook/fan
> $ECHO "[------------------------------]"
>
>
> This is a script I use to check my battery and temp on my laptop. The
> output is:
>
> matt@slacker:~> sysinf
> [------- Battery Info ---------]
> Status: charged
> Gauge: 100 %
> AC on-line
> [------- Fan and Temp ---------]
> CPU temperature: 58 C
> Fan is off
> [------------------------------]
>
> Am I digging in too deep for just starting? I have been reading over the
> online examples and plan on getting a few books next week. I just wanted
> to know if my plans for what I want to do are too much for someone just
> starting ;-p
>
This is a pretty simple script for doing some simple things. It's well
executed and it works. You can't ask for more.
I'd make a couple of comments. First setting $CAT et all to fixed values
is okay, but has a liability. If you're ever on a different machine with
a different distro, you may find things moved (well, maybe not with
these particular commands). Better to do something like:
CAT=`which cat`
The which command finds where something is on your system, and the
backticks (`) allow its execution.
Personally, I never do this. Rather than setting a $CAT variable, I just
use cat, like:
cat /proc/omnibook/ac
If a user is running this and the paths to these executables aren't in
their personal path, they have a bigger problems.
Anyway, you're doing great. Just keep at it. (BTW, you can do the above
script actions in C as well, though it's _far_ more complicated.)
Paul
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