- Attach to a running process with -p: strace -c -p
- look for system call with -e, : strace -f -p -e epoll_wait
- strace ls 2>&1 | grep mmap
- strace ls &| grep mmap
- strace -e mmap ls
- http://www.reddit.com/r/programming/comments/1thk2e/understanding_how_killall_works_using_strace/
- http://www.hokstad.com/5-simple-ways-to-troubleshoot-using-strace
- http://chadfowler.com/blog/2014/01/26/the-magic-of-strace/
- http://www.itworld.com/operating-systems/378491/unix-having-your-way-strace
- http://rainbow.chard.org/2011/10/02/debu-like-a-sysadmin/
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