help with cat

STANKAR · 2011-01-02 15:27:32

Hi, i need help with formating output from text.

For example i have this output:

/dev/sda: WDC WD1600BEVT-22ZCT0: 37°C

And i need format this output to "37°C" only or "/dev/sda" only or "WDC WD1600BEVT-22ZCT0" only.

I know only how i can format output to "/dev/sda" :

cat text.txt | head -c 8

Thanks

Last edited by STANKAR (2011-01-02 17:16:53)

graysky · 2011-01-02 15:35:07

echo "/dev/sda: WDC WD1600BEVT-22ZCT0: 37°C" | cut -c34-38
37°C

STANKAR · 2011-01-02 15:38:49

graysky wrote:

echo "/dev/sda: WDC WD1600BEVT-22ZCT0: 37°C" | cut -c34-38
37°C

Thanks a lot, i didn't know that is so simple.

skunktrader · 2011-01-02 16:54:20

echo "/dev/sda: WDC WD1600BEVT-22ZCT0: 37°C" | cut -d':' -f3

might be less brittle

falconindy · 2011-01-02 17:11:51

Sad cat is sad:

echo "/dev/sda: WDC WD1600BEVT-22ZCT0: 37°C" | awk '{ print $NF }'

STANKAR · 2011-01-02 17:22:59

I found new problem. I didn't use this commands for x-lined output.

for example output of this: cat /proc/acpi/battery/BAT1/state

present:                 yes
capacity state:          ok
charging state:          charged
present rate:            298 mA
remaining capacity:      10364 mAh
present voltage:         12529 mV

If i need format output to "10364" or "charged" which command i can use ?

falconindy · 2011-01-02 17:49:27

This is getting repetitive...

awk '/^charging state/{ print $NF }' /proc/acpi/battery/BAT1/state

sed -n '/^charging state/s/.*:\(.*\)/\1/p' /proc/acpi/battery/BAT1/state

while IFS=':' read label val; do
  [[ $label == charging state ]] && { echo $val; exit; }
done < /proc/acpi/battery/BAT1/state

There's many ways to do these things. I advise you to learn a little on your own as it will make your life in linux much easier and more productive.
http://mywiki.wooledge.org/BashGuide
http://mywiki.wooledge.org/BashFAQ
http://wiki.bash-hackers.org/doku.php

Last edited by falconindy (2011-01-02 17:50:00)

Arch Linux

#1 2011-01-02 15:27:32

help with cat

#2 2011-01-02 15:35:07

Re: help with cat

#3 2011-01-02 15:38:49

Re: help with cat

#4 2011-01-02 16:54:20

Re: help with cat

#5 2011-01-02 17:11:51

Re: help with cat

#6 2011-01-02 17:22:59

Re: help with cat

#7 2011-01-02 17:49:27

Re: help with cat

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