Cron <root at backup1> /usr/local/bin/rsnapshot -c /usr/local/etc/rsnapshot_desktops.conf weekly

[Cron Daemon]

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rsnapshot encountered an error! The program was invoked with these options:
/usr/local/bin/rsnapshot -c /usr/local/etc/rsnapshot_desktops.conf weekly 
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ERROR: /usr/local/etc/rsnapshot_desktops.conf on line 7:
ERROR: cmd_rsync /usr/bin/rsync - /usr/bin/rsync is not executable 
ERROR: ---------------------------------------------------------------------
ERROR: Errors were found in /usr/local/etc/rsnapshot_desktops.conf,
ERROR: rsnapshot can not continue. If you think an entry looks right, make
ERROR: sure you don't have spaces where only tabs should be.