This is part of a little experiment of mine where I rewrite some of my Python tools in Lua, just to get a feel for the language and to see if I want to fully switch to Lua for writing simple tools.
ssh-key-picker is a simple command line tool that lets you have exactly 1 SSH key at a time.
This is simply accomplished by placing disabled keys into a folder named disabled-keys in ~/.ssh.
Theoretically, this should work fine on any OS.
Running just ssh-key-picker will show a list of all your keys.
You can then pick from the list to enable that key.
However, you can use the --key or -k option to specify the name of the key you want to enable.
When using -k, you don't need to specify the full name, just part of it.
e.g. running ssh-key-picker -k rsa will enable a key named id_rsa.
First, run ./depends.sh to get dependencies.
If you are not running Debian/Ubuntu or any of its derivatives,
you will need to check depends.txt for required packages.
Finally, just run sudo ./install.sh to install to the system,
or just ./install.sh to install to your user folder.
You can specify a custom install path by setting INSTALL_DIR.
Note that a lib folder will be created in the parent of INSTALL_DIR.