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xt_va_usage(3) Library Functions Manual xt_va_usage(3) NAME xt_va_usage() - Print usage message and terminate process LIBRARY #include <xtend/proc.h> -lxtend SYNOPSIS void xt_va_usage(const char *format_string, ...) ARGUMENTS format_string: printf-style format string Additional arguments to match placeholders in format_string DESCRIPTION xt_va_usage() is a simple convenience function that takes a printf-style variable argument list, prints a message to stderr, and terminates the pro- ces with an exit status of EX_USAGE. The message should indicate correct command-line usage of the calling program as conventional for Unix com- mands. RETURN VALUES Does not return, terminates the calling process SEE ALSO printf(3), vfprintf(3), exit(3), sysexits(3) xt_va_usage(3)
NAME | LIBRARY | SYNOPSIS | ARGUMENTS | DESCRIPTION | RETURN VALUES | SEE ALSO
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