SIMPLE SOLUTIONS

EXPLAIN_SETENV_OR_DIE - reference manual online

Change or add an environment variable and report errors.

Chapter
explain_setenv_or_die(3)             Library Functions Manual            explain_setenv_or_die(3)

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