journalctl:tldr:61749
journalctl: Show all messages by a specific process.
$ journalctl _PID=${pid}
try on your machine
The command "journalctl" is a utility in Linux systems that allows users to view and manage logs captured by the systemd journal.
The "_PID=${pid}" part is an option to the "journalctl" command that filters the log entries based on the process ID (PID) specified by the variable "${pid}".
Process ID is a unique identifier assigned to a running process in a system. By setting the "_PID" option and providing a specific PID value, the "journalctl" command will display only the log entries associated with that particular process.
In summary, the command "journalctl _PID=${pid}" is used to view the system logs related to a specific process ID.
This explanation was created by an AI. In most cases those are correct. But please always be careful and
never run a command you are not sure if it is safe.