Enable MacOS Start Up sound in the new 2016 and 2017 Macbook pro

Disable boot on power source and boot on lid open by running this on terminal:

sudo nvram AutoBoot=


Enable it again by running

sudo nvram AutoBoot=%03


Feature removed by apple on latest firmware, doesn't work anymore.
Bonus: Boot chime control
sudo nvram BootAudio=
sudo nvram BootAudio=%01

Comments

Post a Comment

Popular posts from this blog

How to clean all the foreman task and locked task

1.- First make su to postgres user su -s /bin/bash - postgres  2.-Execute psql psql  3.- connect to the foreman database \c foreman;  4.- Delete all the foreman task and foreman task locks delete from foreman_tasks_tasks;  delete from foreman_tasks_locks;  5.- Quit from postgres and exit \q  exit  6. Restart all the services for s in {qpidd,pulp_celerybeat,pulp_ resource_manager,pulp_workers, httpd}; do sudo service $s restart; done  Update in todays foreman you can clean the task using the following command: foreman-rake foreman_tasks:cleanup
Read more

Restricting Users to Send mails to Certain Domains on Zimbra 8.5 and above

Please make sure to make all this changes you are using the zimbra user no root user because when you create the databases with root user doesn't work it's not creating the databases required as lmdb root create the databases with postmap as hash be aware of this. 1. Open file /opt/zimbra/conf/zmconfigd/smtpd_sender_restrictions.cf and add this line at the top check_sender_access lmdb:/opt/zimbra/postfix/conf/restricted_senders 2. Open file /opt/zimbra/conf/zmconfigd.cf and add those lines before RESTART mta. make a search for RESTART mta and add the lines before of the RESTART POSTCONF smtpd_restriction_classes local_only POSTCONF local_only FILE postfix_check_recipient_access.cf RESTART mta 3. Create a file /opt/zimbra/conf/postfix_check_recipient_access.cf and add the following line   check_recipient_access lmdb:/opt/zimbra/postfix/conf/local_domains, reject 4. Create a file “/opt/zimbra/postfix/conf/restricted_senders” and list all the users, whom ...
Read more

How to authenticate Satellite web UI users using FreeIPA?

How to authenticate Satellite web UI users using FreeIPA? ⁠1.- Installing the IPA Client Install the client packages. These packages provide a simple way to configure the system as a client; they also install and configure SSSD. For a regular user system, this requires only the ipa-client package: ​[root@client ~]# yum install ipa-client 2.- If the IdM server is configured as the DNS server and is in the same domain as the client, add the server's IP address as the first entry in the list of name servers in the client's /etc/resolv.conf file. 3.- Run the client setup command. ​[root@client ~]# ipa-client-install --enable-dns-updates The --enable-dns-updates option updates DNS with the client machine's IP address. This option should only be used if the IdM server was installed with integrated DNS or if the DNS server on the network accepts DNS entry updates with the GSS-TSIG protocol. Options for ipa-client-install are listed in the ipa-client-install manpage...
Read more