hello,

I need to obtain the Mac Adress and write him in a file.
I'm trying to do this with a command in crontab, with ifconfig, but it's only possible do this if i disabled the password for run the command, but than i have security problems.
I'm searching for a script (.sh) that allows me to do that, in crontab, without those problems. Is it possible? Thus anyone have a sript to do this?

Thanks,
Pedro

Try researching sudo for Mac OS

If you have sudo permissions, you can add the command to root's crontab.

Thanks era,

I'm not an expertise in MAC OSX. Can you help me? Can you show me the command line that i can use in the crontab? At this momment I have the sudoers file configured to not ask for password, but i want to put him asking for the password.
The objective is to put Mac Adress in a file txt during the reboot process, without human intervention.

Thanks for your help.
Pedro Almeida

I have found this:

NOPASSWD and PASSWD
By default, sudo requires that a user authenticate him or herself before running a command. This behavior can be modified via the NOPASSWD tag. Like a Runas_Spec, the NOPASSWD tag sets a default for the commands that follow it in the Cmnd_Spec_List. Conversely, the PASSWD tag can be used to reverse things. For example:

ray rushmore = NOPASSWD: /bin/kill, /bin/ls, /usr/bin/lprmwould allow the user ray to run /bin/kill, /bin/ls, and /usr/bin/lprm as root on the machine rushmore as root without authenticating himself. If we only want ray to be able to run /bin/kill without a password the entry would be:

ray rushmore = NOPASSWD: /bin/kill, PASSWD: /bin/ls, /usr/bin/lprmNote, however, that the PASSWD tag has no effect on users who are in the group specified by the exempt_group option.

By default, if the NOPASSWD tag is applied to any of the entries for a user on the current host, he or she will be able to run sudo -l without a password. Additionally, a user may only run sudo -v without a password if the NOPASSWD tag is present for all a user's entries that pertain to the current host. This behavior may be overridden via the verifypw and listpw options.



My question is: Can I exclude just one command from the need of Password for all users? I'm using something like this
ifconfig en1 | grep ether >> /something/MacAdress.txt

Thanks
PA

Why don't you just run that command as root during the boot process? I'm not particularly familiar with Mac OS X either, so how exactly to do that is not my table, but in general, just add a small init script in your local equivalent of /etc/init.d/rc.local or similar.

Do you really expect your MAC address to change between reboots ...?