It's obviously not that, as the article mentions, if you delete yourself, the /proc/$pid/exec link becomes: /proc/5868/exe -> '/home/user/main (deleted)'

It's obviously not that, as the article mentions, if you delete yourself, the /proc/$pid/exec link becomes: /proc/5868/exe -> '/home/user/main (deleted)' Since the author in the article acknowledged that, it seems clear to me that they weren't talking about deleting the exe, but instead something to do with PR_SET_MM_EXE_FILE.