If you use the command line and frequent a particular directory you can set cd to scan, not just current, but other directories as well.
Modify ~/.bash_profile by appending directories to the CDPATH environment variable.
Restart your terminal session and now you can
cd projectDir. cd will reference any subdirectories in the current directory—as well as $HOME/Repos.
Autotabbing Custom Base Directories
You can install an additonal library; bash-completion to use the [tab] key to autocomplete from the cd command.
Add the following to ~/.bash_profile.
1 2 3 4
To install bash-completion on other systems and more resources: https://github.com/bobthecow/git-flow-completion/wiki/Install-Bash-git-completion
Case Insensitive Completion
Update ~/.inputrc file to include the following line:
For hyphens and underscores as well: