explain_system_or_die(3)				     Library Functions Manual					  explain_system_or_die(3)

NAME

       explain_system_or_die - execute a shell command and report errors

SYNOPSIS

       #include <libexplain/system.h>
       void explain_system_or_die(const char *command);
       void explain_system_success_or_die(const char *command);
       int explain_system_success(const char *command);

DESCRIPTION

       These functions may be used to execute commands via the system(3) function, and report the results.

   explain_system_or_die
       void explain_system_or_die(const char *command);

       The  explain_system_or_die  function  is  used  to  call  the  system(3) system call.  On failure an explanation will be printed to stderr,
       obtained from explain_system(3), and then the process terminates by calling exit(EXIT_FAILURE).

       This function is intended to be used in a fashion similar to the following example:
	      int status = explain_system_or_die(command);

       command The command, exactly as to be passed to the system(3) system call.

       Returns:
	       This function only returns on success, see system(3) for more information.  On failure, prints an explanation and exits.

   explain_system_success_or_die
       void explain_system_success_or_die(const char *command);

       The explain_system_success_or_die function is used to call the system(3) system call.  On failure, including any  exit  status  other  than
       EXIT_SUCCESS,  an  explanation  will  be  printed  to  stderr,  obtained from explain_system(3), and then the process terminates by calling
       exit(EXIT_FAILURE).

       This function is intended to be used in a fashion similar to the following example:
	      explain_system_success_or_die(command);

       command The command, exactly as to be passed to the system(3) system call.

       Returns:
	       This function only returns on success.  On failure, prints an explanation and exits.

   explain_system_success
       int explain_system_success(const char *command);

       The explain_system_success function is used to call the system(3) system call.  On failure, including any exit status other than  EXIT_SUC-
       CESS,  an explanation will be printed to stderr, obtained from explain_system(3).  However, the priniting of an error message does not also
       cause exit(2) to be called.

       This function is intended to be used in a fashion similar to the following example:
	      int status = explain_system_success(command);

       command The command, exactly as to be passed to the system(3) system call.

       Returns:
	       the value returned by the system(3) system call.  In all cases other than EXIT_SUCCESS,	an  error  message  will  also	have  been
	       printed to stderr.

SEE ALSO

       system(3)
	       execute a shell command

       explain_system(3)
	       explain system(3) errors

       exit(2) terminate the calling process

COPYRIGHT

       libexplain version 0.52
       Copyright (C) 2008 Peter Miller

															  explain_system_or_die(3)