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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) func- tion, 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 fol- lowing 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 sys- tem(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 fol- lowing 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) sys- tem call. On failure, including any exit status other than EXIT_SUC- CESS, an explanation will be printed to stderr, obtained from ex- plain_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 fol- lowing 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 1.3 Copyright (C) 2008 Peter Miller explain_system_or_die(3)
NAME | SYNOPSIS | DESCRIPTION | SEE ALSO | COPYRIGHT
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