Lennart Augustsson <[EMAIL PROTECTED]> writes:
> Just because many applications use this doesn't make it safe or good.
> Presumably you are testing for the existence of the file to do something
> to it (read, create, delete...). It's better to do the operation you want to
> do and have it fail if the file is missing (or existing if you create). You
> then just have to handle the exception (that part is already in H98) or
> proceed with the normal path. I claim the code simpler this way and you
> avoid any race conditions.
I said real-world pbs ;p
WARNING, perl below!
- checking if devfs is mounted in /dev: -e "/dev/.devfsd"
- checking wether there is cdrom drive with devfs: -e "/dev/cdroms/cdrom0"
- looking for a file in a PATH-like:
if ($f !~ m|/|) { -e "$_/$f" and $f = "$_/$f", last foreach @icon_paths }
-
if (-e "$f.gz") {
# ... the wanted file is gzip'ed, doing whatever is needed
}
-
-x "/bin/sh" or die "cannot open shell - /bin/sh doesn't exist";
fork and return;
# doing things
# now, and only now exec'ing
exec "/bin/sh"
-
if (! -e '/usr/sbin/showmount') {
my $pkg = 'nfs-utils-clients';
$in->ask_okcancel('', _("The package %s needs to be installed. Do you want to
install it?", $pkg), 1) or return;
$in->do_pkgs->install($pkg);
}
If you want some more, just ask ;)
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