• access
• open
• unlink
• close
• read
• write
• malloc
• waitpid
• wait
• free
• pipe
• dup
• dup2
• execve
• fork
• perror
• strerror
• exit

Your program will be executed as follows:./pipex file1 cmd1 cmd2 file2

./pipex infile "ls -l" "wc -l" outfile

• You have to turn in a Makefile which will compile your source files. It must not relink.
• You have to handle errors thoroughly. In no way your program should quit unexpectedly (segmentation fault, bus error, double free, and so forth).
• Your program mustn’t have memory leaks.
• If you have any doubt, handle the errors like the shell command: < file1 cmd1 | cmd2 > file2

This:$> ./pipex file1 cmd1 cmd2 cmd3 ... cmdn file2
Should behave like: < file1 cmd1 | cmd2 | cmd3 ... | cmdn > file2

This:$> ./pipex here_doc LIMITER cmd cmd1 file
Should behave like: cmd << LIMITER | cmd1 >> file

⚠️ The bonus part will only be assessed if the mandatory part is PERFECT. Perfect means the mandatory part has been integrally done and works without malfunctioning. If you have not passed ALL the mandatory requirements, your bonus part will not be evaluated at all.