ast_comparator/test/student_data/handout/shlab-handout/cases/reference_3_tsh.c
/*
 * builtin_cmd - If the user has typed a built-in command then execute
 *    it immediately.
 */
If the user has typed a built-in command then execute
it immediately.
If the user has typed a built - in command then execute it immediately .
int builtin_cmd(char **argv)
{
    if (!strcmp(argv[0],"bg")) {
        do_bgfg(argv);
        return 1;
    } else if (!strcmp(argv[0],"fg")) {
        do_bgfg(argv);
        return 1;
    } else if (!strcmp(argv[0],"quit")) {
        exit(0);
    } else if (!strcmp(argv[0],"jobs")) {
        listjobs(jobs);
        return 1;
    } else if (!strcmp(argv[0],"&")) {
        return 1;
    }
    return 0;
}
int builtin_cmd ( char * * argv ) { if ( ! strcmp ( argv [ 0 ] , " " ) ) { do_bgfg ( argv ) ; return 1 ; } else if ( ! strcmp ( argv [ 0 ] , " " ) ) { do_bgfg ( argv ) ; return 1 ; } else if ( ! strcmp ( argv [ 0 ] , " " ) ) { exit ( 0 ) ; } else if ( ! strcmp ( argv [ 0 ] , " " ) ) { listjobs ( jobs ) ; return 1 ; } else if ( ! strcmp ( argv [ 0 ] , " " ) ) { return 1 ; } return 0 ; }
builtin_cmd - If the user has typed a built-in command then execute
    it immediately.
builtin_cmd - If the user has typed a built - in command then execute it immediately .