John the Ripper

# wget https://www.openwall.com/john/k/john-1.9.0-jumbo-1.tar.xz
# xzcat john-1.9.0-jumbo-1.tar.xz |tar xfv -
# cd john-1.9.0-jumbo-1
# cd src
# ./configure
# make

# wget www.openwall.com/john/j/john-1.8.0.tar.xz
# xzcat john-1.8.0.tar.xz |tar xfv -
# cd john-1.8.0
# make
# make linux-x86-64

 ./john ../../pass
 ./john ../../pass  --format=crypt
 ./john ../../pass  --format=sha256crypt
 ./john ../../pass  --format=sha512crypt

# cd ../run
# cp /etc/shadow .
# ./john shadow
or 
# ./john --format=crypt shadow

# gcc crypt.c -o crypt -lcrypt
# ./crypt >|pass
# cat pass
# rm ~/.john/john.pot
# john pass --format=crypt

#include <stdio.h>
#include <crypt.h>
void main(void)
{
  char* x;
  x = crypt("apple", "$5$5rbD1QMx$");            // SHA-256
  printf("%s\n", x);
  x = crypt("green", "$5$5rbD1QMx$");            // SHA-256
  printf("%s\n", x);
  x = crypt("black", "$6$5rbD1QMx$");            // SHA-512
  printf("%s\n", x);
  x = crypt("hsue,dxurrwe86", "$6$5rbD1QMx$");   // SHA-512
  printf("%s\n", x);
}