How to detect which process is run by what? Post: 303038655

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Top Forums UNIX for Beginners Questions & Answers How to detect which process is run by what? Post 303038655 by MadeInGermany on Tuesday 10th of September 2019 07:23:30 AM

09-10-2019

Registered User

Tip: ptree for linux

Please safe the following script as "/usr/local/bin/ptree", and make it executable.

Code:

#!/bin/sh
# Solaris style ptree

[ -x /usr/bin/ptree ] && exec /usr/bin/ptree "$@"

PATH=/bin:/usr/bin:/usr/sbin:/sbin
export PATH

case $1 in
-*)
 echo "
Usage: ptree [ PID | USER ]
Print process tree
 PID : extract branch for this process
 USER : filter for this (existing) user
 USER PID : do both
"
 exit
;;
*[!0-9]*)
 psopt="-u $1"
 shift
;;
*)
 psopt="-e"
esac
psopt="$psopt -H -o pid= -o args="

if [ -z "$1" ]; then
 ps $psopt
 exit
fi

#some effort to add less to the ps list
tmp=/tmp/ptree.$$
trap 'rm -f $tmp' 0 HUP INT TERM
ps $psopt >$tmp
<$tmp awk '
{ ci=index(substr($0,6),$2); o[ci]=$0 }
ci>s[a] { s[++a]=ci }
$1==pid {
 for(i=1;i<=a;i++) {
  si=s[i]; if(si<=ci) print o[si]
 }
 walkdown=ci
 next
}
ci<=walkdown { exit }
walkdown!=0 { print }
' pid="$1"

Then put the following as one of the first commands into your "ban.sh" script:

Code:

/usr/local/bin/ptree $$ >>/tmp/ban.sh.ptree.out

Now, in /tmp/ban.sh.ptree.out you can see which processes (and parent processes) ran your "ban.sh".

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MadeInGermany

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LEARN ABOUT HPUX

ptree

ptree(1)						      General Commands Manual							  ptree(1)

NAME

       ptree - prints the process tree hierarchy

SYNOPSIS

       [pid1|username1 [pid2|username2]...]

DESCRIPTION

       prints  the process tree of all processes that match the specified arguments.  While printing the tree, the child processes are indented to
       the right from their respective parent processes.

   Options
       Prints the tree starting from the children of
		 (usually pid 0).  The default is to print the tree starting from the children of (pid 1).

   Operands
       pid	 Print the process tree for the process ID number specified by pid.

       username  Print the process tree for all the processes from the user specified by username.  Note that only username (and not user ID)  can
		 be specified for this instance.

       If no operands are specified, then prints the process tree of all processes starting from the children of or (if is specified).

EXTERNAL INFLUENCES

   Environment Variables
       If is not specified or is null, it defaults to (see lang(5)).

EXAMPLES

       Print the process tree for pid 100 and for all processes owned by

WARNINGS

       Process information can change while is running; the tree displayed by is only a snapshot in time.  Some data printed for defunct processes
       is irrelevant.

       Users of must not rely on the exact field widths and spacing of its output, as these will vary depending on the system and the  release	of
       HP-UX.

SEE ALSO

       pgrep(1), pkill(1), ps(1), fork(2).

																	  ptree(1)

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