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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. Thanks in advance Simon -- The Mailing List for the Devon & Cornwall LUG http://mailman.dclug.org.uk/listinfo/list FAQ: http://www.dcglug.org.uk/linux_adm/list-faq.html