Ubuntu – How to see detailed information about a given PID

command lineprocess

The headline basically says it all. I have a program where I am only given the PID, nothing more really, and I would like to know how I get more information about the given process.

Best Answer

ps -Flww -p THE_PID

will show you some information. See the ps manpage for more information about the ps command. The "STANDARD FORMAT SPECIFIERS" section explains what the different columns mean.

How to get a parent PID (PPID) from a child's process ID (PID) using the command-line

Use ps -o ppid=

e.g. ps -o ppid= 2072 returns 2061, which you can easily use in a script etc. ps -o ppid= -C foo gives the PPID of process with command foo. You can also use the old fashioned ps | grep: ps -eo ppid,comm | grep '[f]oo'.

Fuller explanation: ps -f 2072 returns

UID        PID  PPID  C STIME TTY      STAT   TIME CMD
izx       2072  2061  0 07:16 ?        S      0:00 /usr/lib/pulseaudio/pulse/gconf-helper

The pstree relation is: pstree -s -p 2072:

init(1)───pulseaudio(2061)───gconf-helper(2072)

Ubuntu – How to kill the process using the name of the program instead of PID

Use killall:

killall <the_process_name>

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Ubuntu – How to get the parent process ID of a given child process

How to get a parent PID (PPID) from a child's process ID (PID) using the command-line

Ubuntu – How to kill the process using the name of the program instead of PID

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