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PID 0 is the kernel; when the shell exits, the process ID for the session becomes 0. Downstream bug report https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=258996
c2a0e4cf
PID 0 is the kernel; when the shell exits, the process ID for the session becomes 0. Downstream bug report https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=258996