A quick note, I see a few big issues: 1. There's no guarantee that you can run anything directly out of /tmp/. IIRC lots of distros mount /tmp/ with noexec spe

A quick note, I see a few big issues: 1. There's no guarantee that you can run anything directly out of /tmp/. IIRC lots of distros mount /tmp/ with noexec specifically so you can't do this. You might still be able to invoke ld directly to run it, but that's still kinda a hack to get around the noexec. 2. You need write access to the .c file. That means you can't install any scripts using this system-wide, because you won't have write-access to the .c source unless you're root. IMO, the most obvious solution to the second is to make a copy of the .c source and edit that instead. AFAIK there isn't an easy solution to the first issue though.