> Sysadmin can "cat" the crontabs files
> (/var/spool/cron/crontabs/<user>) but the
> result will be the same (carriage return
> will be displayed and sysadmin won't see
> any hidden tasks).

If the sysadmin would use "cat -v" instead of "cat" as suggested, he would 
immediately see the hidden commands. Perhaps it would be sufficient to change 
the "crontab" command in a similar way, adding an additional command line 
option which would translate exotic characters like "cat -v" does? 

Unfortunately, it wouldn't be POSIX then, no? Still, it seems to me that this 
change would be much less intrusive than the other ones being discussed.




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