Need some help with "sed" command

[octopus]

Need some help with sed command.

I want to remove ":" from CPU out from this line: cpu="`cat /proc/dmu/temperature | sed 's/ø//'`"

Now I get this out put: CPU temperature : 77C

Thanks

 

[ColinTaylor]

How about:

cpu="`cat /proc/dmu/temperature | sed 's/ø// ; s/://'`"

or even the non-depreciated form

cpu="$(cat /proc/dmu/temperature | sed 's/ø// ; s/://')"

 

[FreshJR]

sed 's/://'

You have wrong charecter in your sed

 

[ColinTaylor]

sed 's/://'

You have wrong charecter in your sed

Good point. @octopus Are you trying to remove just the ":", or the ":" and the degree symbol?

 

[octopus]

Good point. @octopus Are you trying to remove just the ":", or the ":" and the degree symbol?

Best if I can remove both and replace "C" with my own text, degrees
Thanks!

 

[ColinTaylor]

cpu="$(cat /proc/dmu/temperature | sed 's/\t: /XXXXX/ ; s/øC$/YYYYY/')"

Notice how the " : " is actually <tab><colon><space>

cat /proc/dmu/temperature | hd
00000000  43 50 55 20 74 65 6d 70  65 72 61 74 75 72 65 09  |CPU temperature.|
00000010  3a 20 38 35 f8 43 0a 0a                           |: 85.C..|

 

[octopus]

cpu="$(cat /proc/dmu/temperature | sed 's/\t: /XXXXX/ ; s/øC$/YYYYY/')"

Notice how the " : " is actually <tab><colon><space>

cat /proc/dmu/temperature | hd
00000000  43 50 55 20 74 65 6d 70  65 72 61 74 75 72 65 09  |CPU temperature.|
00000010  3a 20 38 35 f8 43 0a 0a                           |: 85.C..|

Thats give:
octopus@RT-AC68U:/tmp/home/root# cat /proc/dmu/temperature | sed 's/\t: /XXXXX/ ; s/øC$/grder/'
CPU temperatureXXXXX75

Prefered output is: CPU temperature 75 degrese

Thanks

 

[Martineau]

Prefered output is: CPU temperature 75 degrese

cat /proc/dmu/temperature | sed -r 's/\t: // ; s/([0-9]{1,3})/ \1 degrese/'

 

[octopus]

cat /proc/dmu/temperature | sed -r 's/\t: // ; s/([0-9]{1,3})/ \1 degrese/'

When tested from xshell i get this out:
octopus@RT-AC68U:/tmp/home/root# cat /proc/dmu/temperature | sed -r 's/\t: // ; s/([0-9]{1,3})/ \1 degrese/'
CPU temperature 75 degrese

But when in this case sending mail I get signs at then end: " øC "
CPU temperature 75 degreseøC

Thanks !

 

[Martineau]

When tested from xshell i get this out:
octopus@RT-AC68U:/tmp/home/root# cat /proc/dmu/temperature | sed -r 's/\t: // ; s/([0-9]{1,3})/ \1 degrese/'
CPU temperature 75 degrese

But when in this case sending mail I get signs at then end: " øC "
CPU temperature 75 degreseøC

Thanks !

Hmm strange...

deja vu ?

 

[ColinTaylor]

A fairly horrible solution:

# cpu="$(printf "The temperature is %s degrees" $(cat /proc/dmu/temperature | sed 's/[^0-9]*//g'))"
# echo $cpu
The temperature is 82 degrees

 

[Martineau]

When tested from xshell i get this out:
octopus@RT-AC68U:/tmp/home/root# cat /proc/dmu/temperature | sed -r 's/\t: // ; s/([0-9]{1,3})/ \1 degrese/'
CPU temperature 75 degrese

But when in this case sending mail I get signs at then end: " øC "
CPU temperature 75 degreseøC

Not strictly 'sed'

sed -r 's/\t: // ; s/([0-9]{1,3})/ \1 degrese/ ; s/C$//' | tr -d '\xf8'

 

[octopus]

Not strictly 'sed'

sed -r 's/\t: // ; s/([0-9]{1,3})/ \1 degrese/ ; s/C$//' | tr -d '\xf8'

Thank you!
That working fine nothing more " øC " . I can read In mail: CPU temperature 77 degrees

2.4Ghz radio    50 Grader
5.0Ghz radio    52 Grader
CPU temperature 76 Grader

Thanks for all help. I have forgot about that deja vu.......... getting old

 

[RMerlin]

cat /proc/dmu/temperature | cut -d ":" -f 2

 

[octopus]

cat /proc/dmu/temperature | cut -d ":" -f 2

Thanks, that is also a solution and I can use my own text.
But I get "77øC" as result when email from my scriptit.

 

[Martineau]

cat /proc/dmu/temperature | cut -d ":" -f 2

Your code returns the spurious 2-char unwanted suffix that is invisible i.e. non-printable

cat /proc/dmu/temperature

CPU temperature : 74

i.e. how can the length of the expected 2 digits be 7 chars rather than 3 (includes leading space) or 5 if we include the two trailing LF chars?

cat /proc/dmu/temperature | cut -d ":" -f 2 | wc -c

7

 

[ColinTaylor]

Your code returns the spurious 2-char unwanted suffix that is invisible i.e. non-printable

It's only invisible because you are using an incompatible character set (the last "C" should always be visible anyway). So if you use ISO-8859-15 for example:

# cat /proc/dmu/temperature
CPU temperature : 84øC

Anyway, if @octopus wants to use completely different text then the solution in post #11 will work.

 

[octopus]

Thanks to all of you!

Both ways working just fine:

cpu="`cat /proc/dmu/temperature | sed -r 's/\t: // ; s/([0-9]{1,3})/ \1 Grader/ ; s/C$//' | tr -d '\xf8'`"

use completely different text
cpu="$(printf "CPU temperature %s Grader" $(cat /proc/dmu/temperature | sed 's/[^0-9]*//g'))"

Octopus

@ColinTaylor @RMerlin @Martineau

 

[sfx2000]

If this helps... snippet from another script I keep around...

#!/bin/bash
celsius=$(cat /sys/class/thermal/thermal_zone0/temp | sed 's/.\{3\}$/.&/')
echo "ARM Temp => ${celsius} °C"

which results in...

ARM Temp => 53.692 °C

tweak as needed - regular expressions are fun, until they're not

 

[thelonelycoder]

ARM Temp => 53.692 °C

That's handy, my 86U is at 68.458 °C, ambient temperature 23 °C.