Easy dumb cru question.

[Deleted member 27741]

I have a cru command setup and have a few questions-

Using "/usr/sbin/cru a WOL "20 4 * * 7 /jffs/userscripts/wolscript"" resulted in the command running every day- does the N66U interpret 7 as every day instead of Sunday (0-6 is standard, I believe).

Will "20 4 * * SUN" work?

 

[ColinTaylor]

Using anything other than 0 to 6 is not POSIX compliant so I wouldn't trust it myself. That said, Busybox's cron does support some non-standard options, but not day "7" apparently:

Feb 21 16:31:00 crond[643]: user admin: parse error at 7

Looks like "sun" would be acceptable. But what's wrong with "0"?

 

[thelonelycoder]

I would use Sun, this works for all firmware releases. 0 and 7 produce unexpected results on some older releases.
I use the three letter day variant in all my scripts and never again had complaints, which I had when I was using 0 or 7.

 

[ColinTaylor]

0 and 7 produce unexpected results on some older releases.

0 should never produce unexpected results as it is standard across all varieties of Unix.

 

[Deleted member 27741]

Thanks thelonelycoder and ColinTaylor! Nothing wrong with zero- but SUN is more intuitive. I'll give SUN a shot.