Time Machine Backups
Prepare external Hard Disk
Erase process has failed, press done to continue. Mediakit reports not enough space on device for requested operation.
Quoting  : Here's what I would try. First run
to get the name to the disk you're trying to format. The below commands assume this is "disk1", but replace "disk1" with the correct disk if it's something different. Now unmount the disk:
diskutil unmountDisk force disk1
and then write zeros to the boot sector:
sudo dd if=/dev/zero of=/dev/disk1 bs=1024 count=1024
finally attempt to partition it again:
diskutil partitionDisk disk1 GPT JHFS+ "My External HD" 0g
Encryption Takes For Ever
Quoting : To speed up the process of TM encryption, go to Disk Utility, select your external HDD and erase and use the option journaled/encrypted. Once your external HDD is erased, you can redo the backup and the encryption will be as fast as a flash.
Install Google Keep Notes as Application via Chromium
Type = Application Action = Run Shell Script Contents = /Applications/Chromium.app/Contents/MacOS/Chromium --app=https://keep.google.com
Save as .app in Application folder and drag to dock, done!
Hide top panel from secondary screen from 
Mission Control -> Uncheck the box next to 2Displays have separate Spaces"
Git requires apple xcode tools
HomeBrew Package Manager
First update the formulae and Homebrew itself:
You can now find out what is outdated with:
Upgrade everything with:
By default, Homebrew does not uninstall old versions of a formula, so over time you will accumulate old versions. To remove them, simply use:
brew cleanup <formula>
or clean up everything at once:
or to see what would be cleaned up:
brew cleanup -n
brew deps gnuplot
search for a package/version
brew search gnuplot
manual download file into cache to install a local file  ignore dependencies
brew install gnuplot --ignore-dependencies