strace (Stack Trace)

Important parameters:

`-o filename`	output to file `filename`
`-f`	check forks
`-tt`	protocol time (microseconds)
`-p pid`	only protocol system calls with PID `pid`
`-e`	limit output, see below

strace -e trace=open -o logfile.log ./mycommand -mycommandparameter

strace -e trace=process -o logfile.log ./mycommand -mycommandparameter

ps aux | grep mycommand | grep -v grep mycommand
strace -o logfile.log -p 123
 
# if there's only one program running with that name:
strace -o logfile.log -p `pidof mycommand`

strace (Stack Trace)

Which files get accessed by the program?

Which processes get started/paused/terminated by the program?

protocol syscalls of already started programs