That doesn't look like a great way to choose a backup filename - the rename will succeed even for candidate backup filenames that exist (permissions permitting),...

Really? I'm pretty certain that I have never used a filesystem that, regardless of permissions, would allow you to rename one file on top of an existing one. Which filesystem are you using?

Examine what is said, not who speaks.
"Efficiency is intelligent laziness." -David Dunham
"Think for yourself!" - Abigail
"Memory, processor, disk in that order on the hardware side. Algorithm, algoritm, algorithm on the code side." - tachyon

In reply to Re^5: Copying a file to a temporary file by BrowserUk
in thread Copying a file to a temporary file by shay

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