There are some monitoring tools which take a snapshot of the process table every few minutes. If you happen to run one of those, and your process happens to be running when the snapshots is taken you can catch it.
If this is a postgresql server and you have logging turned up with pids being logged, and the pin in question was a database process, you can probably find it in the database logs.
journalctl lists PIDs, so it might have a corresponding executable name with it.
Good idea, but I couldn't find it
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Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).
Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.
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