Pstree
Unix command that shows the running processes as a tree
From Wikipedia, the free encyclopedia
pstree is a Linux command that shows the running processes as a tree.[1][2][3] 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.
In BSD systems, a similar output is created using ps -d, in Linux ps axjf[4] 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}
