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Old 10-06-2017, 02:55 PM   #1
Springs
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Registered: Apr 2008
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awk with a range of numbers?


hi all,

I'm currently using the below command to get the text before S01 in the filename thats listed in the txt file. what ideally need is to change the 01 so that it looks for any number say between 1 and 100 and still print out the text before it.

awk -F'S01' '{print $1}' file.txt

I don't know of another way. the above works if i change the S01 to another value. I've looked around online but none of the suggestions given seem to work for my requirements.

to confirm, the S01 doesnt change but the text before it does which is why i'm using it as a marker.

any ideas?
 
Old 10-06-2017, 03:23 PM   #2
smallpond
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Registered: Feb 2011
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Is this what you want?
Code:
cat foo
asdhS01ashd
easyS03hard
twodigitS33after

awk -F'S[0-9][0-9]' '{print $1}' foo
asdh
easy
twodigit
 
Old 10-06-2017, 03:59 PM   #3
Springs
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yes, exactly what i was after.

i swear i tried this or at least something similar and it didn't give the right response.

Thanks for the assistance
 
  


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