SIMPLE SOLUTIONS

EXPLAIN_PUTENV_OR_DIE - reference manual online

Change or add an environment variable and report errors.

Chapter
explain_putenv_or_die(3)             Library Functions Manual            explain_putenv_or_die(3)

NAME explain_putenv_or_die - change or add an environment variable and report errors
SYNOPSIS #include <libexplain/putenv.h> void explain_putenv_or_die(char *string); int explain_putenv_on_error(char *string);
DESCRIPTION The explain_putenv_or_die function is used to call the putenv(3) system call. On failure an explanation will be printed to stderr, obtained from the explain_putenv(3) function, and then the process terminates by calling exit(EXIT_FAILURE). The explain_putenv_on_error function is used to call the putenv(3) system call. On failure an explanation will be printed to stderr, obtained from the explain_putenv(3) function, but still returns to the caller. string The string, exactly as to be passed to the putenv(3) system call.
RETURN VALUE The explain_putenv_or_die function only returns on success, see putenv(3) for more infor‐ mation. On failure, prints an explanation and exits, it does not return. The explain_putenv_on_error function always returns the value return by the wrapped putenv(3) system call.
EXAMPLE The explain_putenv_or_die function is intended to be used in a fashion similar to the fol‐ lowing example: explain_putenv_or_die(string);
SEE ALSO putenv(3) change or add an environment variable explain_putenv(3) explain putenv(3) errors exit(2) terminate the calling process
explain_putenv_or_die(3)
This manual Reference Other manuals
explain_putenv_or_die(3) referred by explain(3) | explain_putenv(3)
refer to _exit(2) | explain_putenv(3) | putenv(3)