RE: RE: extract uniques and sort (thanks. 1WTDI)

You know, if this is all that your script does, you may want to consider using standard Unix tools sort and uniq:

$ cat unsorted | sort | uniq >sorted.unique
[download]

It will probably be a bit faster.

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RE: RE: RE: extract uniques and sort (thanks. 1WTDI) by merlyn (Sage) on Sep 23, 2000 at 02:40 UTC
Let's see. A useless `cat`, and a useless `uniq`. {grin} `$ sort -u unsorted >sorted.unique` [download] -- Randal L. Schwartz, Perl hacker	[reply] [d/l]
RE: RE: RE: RE: extract uniques and sort (thanks. 1WTDI) by Fastolfe (Vicar) on Sep 23, 2000 at 04:11 UTC
I didn't realize 'sort' had a -u option. Does that work on Solaris? For some reason I thought I had read that 'sort' and 'uniq' were both required for that task, but now that I look, that's clearly not the case with at least Linux and OpenBSD. And since I was piping anyway, I thought I'd start it with a 'cat' just so the train of thought was easy to follow (first you start with the file, then you sort it, then you look for unique lines). shrug	[reply]
RE: (3) extract uniques and sort (just part of script) by ybiC (Prior) on Sep 23, 2000 at 00:08 UTC
"consider std Unix sort and uniq..." Thanks for the suggestion Fastolfe. I considered that but the snippet is the tail end of a (still modest) 95 line script using `Net::Telnet::Cisco` to query LAN switches for CDP neighbors. Number of switches is under 500 at my current company, so performance isn't really an issue. Could still be a viable option, but I want do what as much as I can within the script itself, and without using `system` calls. cheers, ybiC	[reply]