Regex to validate parameter for sleep


 
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# 8  
Old 11-05-2018
man sed:
Quote:
q [exit-code]
Immediately quit the sed script without processing any more input, except that if auto-print is not disabled the current pattern space will be printed. The exit code argument is a GNU extension.
q0 and q1 in above script set the exit code to be evaluated in the if ... fi construct.



Wouldn't it be the time NOW to analyse the regex used in the sed script and try to transform / translate it to a bash regex?


Howsoever, with some experimenting, I found
Code:
while read DA
  do   if [[ "$DA" =~ [^0-9+.]|^[+0.]*$|[.].*[.] ]]
          then echo invalid value for sleep: $DA, $?, ${BASH_REMATCH[0]}
          else echo valid: $DA, $?, ${BASH_REMATCH[0]}
       fi
  done < file

to come close to what you want / need.
This User Gave Thanks to RudiC For This Post:
# 9  
Old 11-05-2018
Quote:
Wouldn't it be the time NOW to analyse the regex used in the sed script and try to transform / translate it to a bash regex?
That's what I thought, too but it was late and I thought it wouldn't hurt to ask, maybe you or somebody had a quick answer to this. I certainly didn't want you to spend time experimenting.

I'll spend some time to solve the rest myself.

Thanks a lot.
# 10  
Old 11-05-2018
Glad it helped. And, I like experimenting, so don't worry. You're welcome.
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