or download this
stout:~ [16:28:32]$ strace -eopen,unlink perl -e 'open $f, "+>", undef
+'
open("/etc/ld.so.preload", O_RDONLY) = 3
...
open("/tmp/PerlIO_dr5fu4", O_RDWR|O_CREAT|O_EXCL|O_LARGEFILE, 0600) =
+3
unlink("/tmp/PerlIO_dr5fu4") = 0
Process 17389 detached