On 2021/10/31 20:48, Scott Cheloha wrote:
> In uniq(1), if we use getline(3) instead of fgets(3) we can support
> arbitrarily long lines.
It works for me, and getting rid of the length restriction is nice.
I don't know how much of a concern it is, but it's about twice as slow:
$ wc -l /tmp/z
10000000 /tmp/z
$ time (cat /tmp/z | uniq > /dev/null)
0m01.65s real 0m01.62s user 0m00.22s system
$ time (cat /tmp/z | obj/uniq > /dev/null)
0m03.60s real 0m03.52s user 0m00.20s system
$ time (cat /tmp/z | guniq > /dev/null)
0m01.33s real 0m01.28s user 0m00.20s system
though in practice with large files I'd be more likely to sort | uniq -c
and uniq's time is dwarfed by sort's.
