19 мая 2011 г. · GNU grep has the -P option for perl-style regexes, and the -o option to print only what matches the pattern. These can be combined using ...

14 июн. 2020 г. · Capturing groups are numbered by counting their opening parentheses from left to right. In the expression ((A)(B(C))), for example, there are four such groups.

12 мая 2020 г. · I do that and in my terminal using grep -Po for PCRE and show output I'm still getting a full match as if the non-capturing group did not apply.

18 мая 2015 г. · I'm trying to learn to use grep groups, like sed \1\2\3, but have a problem. For example I filtering /etc/services file to separate all ports.

2 янв. 2012 г. · You can use -o and change the grep a little bit -o, --only-matching Print only the matched (non-empty) parts of a matching line, with each such part on a ...

4 окт. 2013 г. · I would like to print out the match groups. Is there a way to do this without Perl/Python? I tried using sed, but I couldn't manage to make it work.

21 дек. 2020 г. · The awk command will extract your number before # and then pass it to sort / uniq. uniq -c will provide a count of each value.

2 февр. 2022 г. · I'll be looking for more nested repeating patterns in a larger file so I don't want to define each time the pattern repeats. How do I grep for the lines that ...

23 мар. 2016 г. · I would like a software to extract a capturing group in a php/preg like syntax. Maybe the most close one is grep -P but I don't get how it works.

4 окт. 2017 г. · I'd like to loop over each pattern found and have access to the different capture groups inside the loop, possibly with grep or awk.