This is my first good unique CGI program

perl -aF, -lne 'print if ! $seen{$F[0]}++' puid2.dat

plee,west1,Sun Oct 22 03+36+04 UTC 2023,
paul,west,Sun Oct 22 03+43+57 UTC 2023,
Sam,west,Sun Oct 22 03+44+11 UTC 2023,
Frank,west,Sun Oct 22 03+46+39 UTC 2023,
dan,231,Mon Oct 23 04+41+43 UTC 2023,
ddd,eee,Mon Oct 23 05+13+47 UTC 2023,




perl -aF, -lne 'print if ! $seen{$F[1]}++' puid2.dat

plee,west1,Sun Oct 22 03+36+04 UTC 2023,
paul,west,Sun Oct 22 03+43+57 UTC 2023,
plee,west4,Sun Oct 22 04+10+08 UTC 2023,
dan,231,Mon Oct 23 04+41+43 UTC 2023,
ddd,eee,Mon Oct 23 05+13+47 UTC 2023,
ddd,eee3,Mon Oct 23 05+16+50 UTC 2023,