-struct passwd * pwcopy(struct passwd *pw);
-
-/*
- * Convert ASCII string to TCP/IP port number.
- * Port must be >0 and <=65535.
- * Return 0 if invalid.
- */
-int a2port(const char *s);
-
-/* code from scp.c/rcp.c */
-char *cleanhostname(char *host);
-char *colon(char *cp);
-
-/*
- * Convert a time string into seconds; format is
- * a sequence of:
- * time[qualifier]
- *
- * Valid time qualifiers are:
- * <none> seconds
- * s|S seconds
- * m|M minutes
- * h|H hours
- * d|D days
- * w|W weeks
- *
- * Examples:
- * 90m 90 minutes
- * 1h30m 90 minutes
- * 2d 2 days
- * 1w 1 week
- *
- * Return -1 if time string is invalid.
- */
-
-long convtime(const char *s);
-
-/* function to assist building execv() arguments */