_____ _ __ _____ _ _ _
/ ____| | | / _| / ____| | | | |
| | __ __ _| |_ ___ ___ ___ | |_ | (___ | |__ ___| | |
| | |_ |/ _` | __/ _ \/ __| / _ \| _| \___ \| '_ \ / _ \ | |
| |__| | (_| | || __/\__ \ | (_) | | ____) | | | | __/ | |
\_____|\__,_|\__\___||___/ \___/|_| |_____/|_| |_|\___|_|_|
The Gates of Shell by Spencer Cheng, featuring Julien Barbier
List of allowed functions and system calls
access (man 2 access)chdir (man 2 chdir)close (man 2 close)closedir (man 3 closedir)execve (man 2 execve)exit (man 3 exit)\_exit (man 2 _exit)fflush (man 3 fflush)fork (man 2 fork)free(man 3 free)getcwd (man 3 getcwd)getline (man 3 getline)getpid (man 2 getpid)isatty (man 3 isatty)kill (man 2 kill)malloc (man 3 malloc)open (man 2 open)opendir (man 3 opendir)perror (man 3 perror)read (man 2 read)readdir (man 3 readdir)signal (man 2 signal)stat (__xstat) (man 2 stat)lstat (__lxstat) (man 2 lstat)fstat (__fxstat) (man 2 fstat)strtok (man 3 strtok)wait (man 2 wait)waitpid (man 2 waitpid)wait3 (man 2 wait3)wait4 (man 2 wait4)write (man 2 write)
The shell will be compiled this way:
$ gcc -Wall -Werror -Wextra -pedantic -std=gnu89 \*.c -o hsh
- Unless specified otherwise, your program must have the exact same output as
sh (/bin/sh) as well as the exact same error output.
- The only difference is when you print an error, the name of the program must be equivalent to your
argv[0] (see below)
Example of error with sh:
$ echo "qwerty" | /bin/sh
/bin/sh: 1: qwerty: not found
$ echo "qwerty" | /bin/../bin/sh
/bin/../bin/sh: 1: qwerty: not found
$
Same error with your program hsh:
$ echo "qwerty" | ./hsh
./hsh: 1: qwerty: not found
$ echo "qwerty" | ./././hsh
./././hsh: 1: qwerty: not found
$
The shell should work like this in interactive mode:
$ ./hsh
($) /bin/ls
hsh main.c shell.c
($)
($) exit
$
But also in non-interactive mode:
$ echo "/bin/ls" | ./hsh
hsh main.c shell.c test\_ls\_2
$
$ cat test\_ls\_2
/bin/ls
/bin/ls
$
$ cat test\_ls\_2 | ./hsh
hsh main.c shell.c test\_ls\_2
hsh main.c shell.c test\_ls\_2
$