Effective grep of log file

Question

I have a log file with a lot of lines on this format:

10.87.113.12 - - [2019-12-09T11:41:07.197Z] \"DELETE /page/sub1.php?id=alice HTTP/1.1\" 401 275 \"-\" \"ali         


        

Answer 1

If you're open to a perl oneliner:

perl -ane '/id=alice&jw_token=([a-f0-9]+).+\b200\b/ && $h{$1}++;END{print"$_\n" for sort(keys %h)}' file.txt
07e876afdc2245b53214fff0d4763730

Explanation:

/                           # regex delimiter
    id=alice&jw_token=      # literally
    ([a-f0-9]+)             # group 1, 1 or more hexa
    .+                      # 1 or more any character
    \b200\b                 # 200 surrounded with word boundaries
/                           # regex delimiter, you may use /i for case insensitive