A password and passphrase generation library and utility. Passgen includes a builtin dictionary so you can get up and running, but you can replace it if you need.
There are two parts to this, a go library that can easily be imported and used, and a command utility.
There are two ways to install passgen. The latest binaries are here, or you can build it yourself.
$ go get github.com/JustinJudd/passgen/passgen
You can view a full list of commands using $ passgen help and $ passgen help [command] but the following examples cover most use cases
Generate a password with
$ passgen password
Generate a numeric password (just numbers) of 4 characters
$ passgen password --type n --min=4 --max=4
Generate a passphrase with
$ passgen passphrase
Provide a custom dictionary file for the passphrase
$ passgen passphrase -d /usr/share/dict/dict.txt
Full documentation for the library is found at GoDoc, including examples