pipex

functions thats done understanding:

• access

• fork

• pipe

• dup

• dup2

• access

• dup

• dup2

• execve

• fork

• pipe

• unlink

• wait

• waitpid

fd[0] ===> pipe 0 fd[1] ===> pipe 1 fd[2] ===> infile fd[3] ===> Parent STD_IN (0) fd[4] ===> Parent STD_OUT (1) fd[5] ===> Child 2 STD_IN (0) fd[6] ===> Child 2 STD_OUT (1)