pstree

pstree is a Linux command that shows the running processes as a tree. It is used as a more visual alternative to the ps command. The root of the tree is either init or the process with the given pid. It can also be installed in other Unix systems.

pstree output in FreeBSD

In BSD systems, a similar output is created using ps -d, in Linux ps axjf[1] produces similar output.

Examples

pstree pid

user@host ~$ pstree 1066
rsyslogd─┬─{in:imjournal}
         └─{rs:main Q:Reg}

pstree username

user@host ~# pstree username
dbus-daemon───{dbus-daemon}

dbus-launch

bash───firefox─┬─6*[{Analysis Helper}]
               ├─{BgHangManager}
               ├─{Cache2 I/O}
               ├─{Compositor}
               ├─{GMPThread}
               ├─{Gecko_IOThread}
               ├─{Hang Monitor}
               ├─{ImageBridgeChil}
               ├─{ImageIO}
               ├─{JS Watchdog}
               ├─{Link Monitor}
               ├─{Socket Thread}
               ├─{SoftwareVsyncTh}
               ├─{StreamTrans #1}
               ├─{Timer}
               └─{gmain}
gollark: We've been through this. Maybe. Possibly.
gollark: This is 47 minutes. I am willing to watch up to exactly 76 seconds.
gollark: No you don't.
gollark: Because that is, broadly speaking, the point of autofill?
gollark: I only need the 2FA code.

See also

References
  1. https://linux.die.net/man/1/ps


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