most used commands in history (comprehensive)

history | perl -F"\||<\(|;|\`|\\$\(" -alne 'foreach (@F) { print $1 if /\b((?!do)[a-z]+)\b/i }' | sort | uniq -c | sort -nr | head
Most of the "most used commands" approaches does not consider pipes and other complexities. This approach considers pipes, process substitution by backticks or $() and multiple commands separated by ; Perl regular expression breaks up each line using | or < ( or ; or ` or $( and picks the first word (excluding "do" in case of for loops) note: if you are using lots of perl one-liners, the perl commands will be counted as well in this approach, since semicolon is used as a separator
Sample Output
$ cat test
1  command file | command file | command | command
2  command <(command file) <(command file)
3  command file > file
4  for i in `command file`; do command file; command file; done | command
5  for i in $(command file); do command file; command file | command; done

$ cat test | perl -F"\||<\(|;|\`|\\$\(" -alne 'foreach (@F) { print $1 if /\b((?!do)[a-z]+)\b/i }' | sort | uniq -c | sort -nr | head

     16 command
      2 for

4
2010-04-08 13:46:09

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What Others Think

the title for this command has two meanings, making it funny at the same time as helpful. Good one alperyilmaz. ++ too for using perl!
linuxrawkstar · 424 weeks and 2 days ago

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