Re: [LUG] sed

[Benjamin A'Lee <bma@xxxxxxxxx>]

On Sat, May 26, 2007 at 07:06:25PM +0100, Simon Williams wrote:
> Sorry for the semi-silly question- I really should learn sed properly.
> 
> lm_sensors prints lines like this:
> fan1:     5273 RPM  (min =    0 RPM, div = 8)
> fan2:        0 RPM  (min =    0 RPM, div = 8)
> fan3:        0 RPM  (min =    0 RPM, div = 2)
> M/B Temp:    +27C  (low  =   +15C, high =   +40C)   sensor = thermistor
> CPU Temp:    +34C  (low  =   +15C, high =   +45C)   sensor = thermistor
> Temp3:       +54C  (low  =    -1C, high =    -1C)   sensor = thermistor
> 
> What I want is the fan1 speed (just "5273") and all 3 temperatures- as 
> "27" (without the + or C).
> 
> I will be grepping out the line I want, so sed only has to deal with 
> single lines.
> 
> I've been using cut for things like this before, but it's not really up 
> to the job anymore.

I believe `awk` is better for the job, but I've never learned `awk`, so:

# Speed:
some_command | sed 's/^fan[0-9]\+: *\([0-9]\+\) RPM.*/\1/'

# Temp:
some_command | sed 's/[^:]*: *+\([0-9]\+\)C.*/\1/'

        bma

-- 
Benjamin A'Lee <bma@xxxxxxxxx>
http://bmalee.eu/~bma/
"You are not entitled to your own opinion. You are only entitled to your own
entitled to your own informed opinion." - Gustave Flaubert

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