At 02:47 PM 8/9/01 -0700, Sara Taillon wrote:
>You can use stat as others recommended, but stat can be expensive. Stat
>is good for getting all permissions, but if you just want to see if you
>can write, execute or read a file, try using the file test operators.
>For example, to see if a file is writable:
>
>if (-w $filename) { ... }
Uh, that -w is going to result in a stat() anyway, so if by 'expensive'
you're talking about run-time performance, it won't make any
difference. More readable, perhaps. But there again, -w isn't guaranteed
to return the right answer (if, say, you're on a filesystem using
ACLs). Doing an open with mode ">>" is a better guide.
--
Peter Scott
Pacific Systems Design Technologies
http://www.perldebugged.com
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