LD_PRELOAD=`pwd`/evil.so [COMMAND]

# Compile to execute `ls` defaultly.
➜  ProcessInjector git:(master) ✗ LD_PRELOAD=`pwd`/evil.so man
Makefile  README.md  evil.c  evil.so  main  main.c
What manual page do you want?

➜  ProcessInjector git:(master) ✗ LD_PRELOAD=`pwd`/backdoor.so ./test_backdoor
password=/usr/bin/ps
Strlen: 20
  PID TTY          TIME CMD
  15531 pts/3    00:00:00 zsh
  19330 pts/3    00:00:00 ps
  19331 pts/3    00:00:00 zsh