Process identifier (PID)

wikipedia:Process identifier

Apr 08 08:44:48 SERVER systemd[1]: nginx.service: Failed to parse PID from file /run/nginx.pid: Invalid argument

In WSL

System has not been booted with systemd as init system (PID 1). Can't operate.
Failed to connect to bus: Host is down

Related terms

• namespace

/proc/$PID/cmdline
/proc/$pid/fd

• pwdx
• SELECT pg_cancel_backend(__pid__);

See also

• PID, PID 1, Process identifier (PID), pidstat, Hidepid, /proc/$PID/
• Process, zombie process, fork, thread: ps, tree, pstree, ps axf, proc, pwdx, which, watch, sar -q, tload, uptime, Interrupts, pgrep, tasklist (Windows), Zombie process, pstack, docker ps, docker-compose ps, jobs, acct, process mrelease, pidstat, IPC, pidof