3 ms·
Avoiding “useless cat” on the command line is premature optimization. Sure, don’t do it in a script that is invoked a lot but it shouldn’t be a concern when pro
by bofh23 5y ago
Avoiding “useless cat” on the command line is premature optimization. Sure, don’t do it in a script that is invoked a lot but it shouldn’t be a concern when prototyping a filter pipeline.
$ cat foo | head -4
b
a
c
b
$ cat foo | head -4 | sort
a
b
b
c
$ cat foo | head -4 | sort | uniq -c
1 a
2 b
1 c
$ cat foo | head -4 | sort | uniq -c | sort -k1nr | head -1
2 b