How do i grep a range of data value output by a program in Bash Script

Question

I am doing this script to check if my OctoPrint (3d-printer) is cooling down or not.

By using

#octocmd status 
temps:
    bed: actual=26.0, target=0.0, offset=0
    tool0: actual=54.9, target=55.0, offset=0
i will get a data like this.

i am able to check it is printing as i have done this in a bash script

/usr/local/bin/octocmd status | grep 'target=200.0, offset=0'
if [ $? == 0 ];  # if target 200; enter if
then
        echo "Printing in progress, Script will check back in 5 minutes"
        /usr/local/bin/octocmd status
        sleep 5m

during cooling down i should see

tool0: actual=189.3(decreasing), target=0.0, offset=0

however i am stuck at trying at my ELSE function to check if it is cooling down. Lets say

actual= (**range from 40.0 to 180**), target=0.0, offset=0

so i would like to humbly ask for help on how to detect any range of data from actual=XXX

this is my code currently:

    while [ 1 ]
do
/usr/local/bin/octocmd status | grep 'target=200.0, offset=0' &> /dev/null  # grab string $ remove error
if [ $? == 0 ];  # if target 200; enter if
then
        echo "Printing in progress, Script will check back in 5 minutes"
        /usr/local/bin/octocmd status
        sleep 5m                                # check every 5 minutes

elif  [ -z "/usr/local/bin/octocmd status |  /*CHECK IF PRINTER IS COOLING DOWN OR NOT, CHECK ACTUAL=30 ~ 180 */"' 2>&1 /dev/null ];
then
        if [ $? == 0 ];
        then
        #enter here if target is cooled with no print job
        /usr/local/bin/octocmd status

        fi

done

??? I'm unsure I understood your question but: `if [[ $actual -gt 40 && $actual -lt 180 ]]` sounds to be your solution. After rereading I think I understood your problem, I'll write an answer — Tensibai, Jan 16 '15 at 08:51
will it be able to 'actual=40.0' and so on up till 'actual=180.0' in that range? — Tsu Wei Quan, Jan 16 '15 at 08:52
If i understood the question correctly you may want to use a while loop that ends when `$Actual` is within the given range — , Jan 16 '15 at 09:07

anubhava · Answer 1 · 2015-01-16T09:06:53.523

3

You can use awk here with a custom field separator:

status | awk -F 'actual=|[,(]' '$2 >= 40 && $2 <= 180 {print "within range"}'

edited Jan 16 '15 at 09:06

answered Jan 16 '15 at 08:52

anubhava

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according to actual output `$2` will be `189.3(decreasing)` and can't be compared to 40 or 180 some more work has to be done on it for comparison to work (and as you're far better than me with awk, I ping to let you improve) – Tensibai Jan 16 '15 at 09:04
so i do have to assign $2 to actual? – Tsu Wei Quan Jan 16 '15 at 09:05
3

*Sigh* why did I forget to use a character class ... :) – Tensibai Jan 16 '15 at 09:13

score 1 · Accepted Answer · answered Jan 16 '15 at 09:09

1

To complete anubhava answer here is how to include it in bash test:

if [[ $(/usr/local/bin/octocmd status | awk -F 'actual=|[,(]'  '$2 >= 40 && $2 <= 180 {print 1}') ]]
  then 
    echo "OK"
  else 
    echo "Not OK"
fi

answered Jan 16 '15 at 09:09

Tensibai

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How do i grep a range of data value output by a program in Bash Script

2 Answers2