Remove mention of site-specific parameters from crontab(1)

[felix.the.red_gmail.com]

Summary

usr.sbin/cron/crontab/crontab.1: Remove mention of site-specific parameters.
The default behavior is only to allow the super user when /var/cron/allow and /var/cron/deny are not present.
Users would have to have recompile crontab(1) for it to behave differently.

From the original PR:
"crontab(1) needs to explain what site-dependent parameters are meant in it"

PR:238126

[brd]

I am not sure that is correct.. On my system the only thing in /var/cron is the tabs directory and my normal user can use crontab(1).

[pauamma_chezdork.com]

In D51140#1168846, @brd wrote:

I am not sure that is correct.. On my system the only thing in /var/cron is the tabs directory and my normal user can use crontab(1).

It's not, as far as I can tell from looking at the source code:

/usr/src/usr.sbin/cron/cron/config.h

/* if ALLOW_FILE and DENY_FILE are not defined or are
 * defined but neither exists, should crontab(1) be
 * usable only by root?
 */

/* #define ALLOW_ONLY_ROOT */ /*-*/

which by default (and in the absence of /var/cron/allow and /var/cron/deny) appears to allow all users. See also function allowed() in /usr/src/usr.sbin/cron/lib/misc.c.

[felix.the.red_gmail.com]

Change "only root" to "all users" to match the source code.

[brd]

Thanks, I think also s/exists/exist/.. right?