Unable to locate packages when installing from various repositories

Question

I removed the https in some links on this post because I was only allowed to put two links in this post.

Hello everyone! I just joined the Ubuntu family and I am currently loving it! But sadly I have had some trouble when I try to install packages from repositories, been looking all over for a solution, but nothing has worked for me. Basically I do the standard procedure,

sudo add-apt-repository "repo name here"
sudo apt-get update
sudo apt-get install "package name here"

I give you guys a more direct example with the log from when I tried to install MacBuntu.

sudo add-apt-repository ppa:noobslab/macbuntu

 This PPA is dedicated to Macbuntu transformation pack for Ubuntu.
 More info: https://launchpad.net/~noobslab/+archive/ubuntu/macbuntu
Press [ENTER] to continue or ctrl-c to cancel adding it
gpg: keyring `/tmp/tmpjb3pxpey/secring.gpg' created
gpg: keyring `/tmp/tmpjb3pxpey/pubring.gpg' created
gpg: requesting key F59EAE4D from hkp server keyserver.ubuntu.com
gpg: /tmp/tmpjb3pxpey/trustdb.gpg: trustdb created
gpg: key F59EAE4D: public key "Launchpad PPA for NoobsLab" imported
gpg: no ultimately trusted keys found
gpg: Total number processed: 1
gpg:               imported: 1  (RSA: 1)
OK

I think this step is working normally, I believe something goes wrong in the following step.

sudo apt-get update

Returned these errors

sudo apt-get install macbuntu-os-icons-lts-v8

Reading package lists... Done
Building dependency tree       
Reading state information... Done
E: Unable to locate package macbuntu-os-icons-lts-v8

If anyone knows whats wrong I'd really appreciate some help! I checked MacBuntu's website to make sure the repository was still there and tried cleaning my apt-get cache. Don't know what else to do.

Answer 1

For Xenial, you need to install macbuntu-os-icons-lts-v7.

Synaptic is another good way to install software... you can see all of the filenames, search, etc.

To solve the errors that occurred during sudo apt-get update, either use Software & Updates, choose the Other Software tab, and remove the tualatrix items, or do the following:

In terminal...

• cd /etc/apt # change to the appropriate directory
• grep tualatrix sources.list # search the file
• if you find any, edit them out, gksudo gedit sources.list
• cd /etc/apt/sources.list.d # change to another directory
• grep tualatrix *.list # search these files
• if you find any, delete that .list file, sudo rm filename.list