newcomer linux, would like to ask how to use grep to match a specified two-digit number.
for example, the original file has various times:
I now want to specify a match between 18:00 and 22:00. How do I use grep?
newcomer linux, would like to ask how to use grep to match a specified two-digit number.
for example, the original file has various times:
I now want to specify a match between 18:00 and 22:00. How do I use grep?
grep -Pe '\d{4}-\d{2}-\d{2},(18|19|20|21|22):.*' <> man grep
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