#Run it against a simple ‘ps’ command:
strace ps
 
#Send output to a file:
strace -o /tmp/strace_ps.log ps
 
#Start the program under control of strace:
strace -Ff -tt <program> <arguments> 2>&1 | tee strace-<program>.log
 
#Start strace with the process ID -
#(You can get PID of a process by typing pidof <program>):
strace -Ff -tt -p <PID> 2>&1 | tee strace-<program>.log
 
#To see only a trace of the
#connect, open, close, read, and write system calls, enter:
strace -e trace=connect,open,close,read,write df > /tmp/out.txt