Linux：Crontab作业不会干扰Sys Admin的作业吗？

Question

I need to create a new crontab job in a Redhat Linux environment. I have sudo access to that but I don't think I can do everything on that system--some higher level sys admins, for example, disable any firewall changes I make.

So here is my crontab command:

crontab e

and that brings up a screen like:

33 2 * * * /usr/bin/cu-firewall update > /dev/null 2>&1
30 1 * * * /root/update_atbi_website > /dev/null
0  4 * * * /home/prov356/scripts/opnforumbackup

I want to not send email and I have done it successfully in my local VM:

MAILTO=""
# execute 15 minute
*/15 * * * * perl /db_xenia/pl/get_usgs.pl

Question: If I were to append the above to the existing crontab info will it prevent sending of emails to the sys admin too? I don't want to get into trouble! Perhaps, I could append /dev/null after my Perl commands?

Thanks.

Answer 1

Never mind: Per @Basile's comment, I didn't need to be sudo. So I logged in as non-sudo and ran crontab -e ; this time there were no sys admin entries. So I simply entered my own configs, saved, and the cronjob seems to be running fine.

Thanks.