/*
 * Assignment Seven
 *
 * Using program six as a starting point, write
 * a new program that has the child
 * As before, the program loops back for a new command
 * and if a number is detected before the redirection
 * operator, that FD is redirected instead of 0 or 1.
 * Also, if the >> operator is detected, append the
 * program output to the file.
 *
 * The program should be able to process the following
 * commands:
 * ls -P 2> file
 * which directs stderr to "file"
 *
 * cat file1 file2 >> file3
 * which adds the contents file1 to the end of file3;
 * then adds the contents of file2 to the end of file3.
 *
 * C. The ability to open a file in "append mode" when the
 *    >> operator is detected.
 *
 */