A random password generator written in Go, mostly because I wanted a cross-platform password generator but also to learn how the testing and benchmarking features work in Go.
Running the program will generate a password consisting of 12 random alphanumeric characters. For example:
genpasswd
will generate something like:
ppM3m4qLOwDP
There is an optional length parameter:
genpasswd 4
which will generate something like:
38qF
You can remove the trailing newline in scripts with tr:
genpasswd | tr -d '\n'
The test ensures the correct length of password is returned for a given input, utilising a testing table. It compiles a new executable and runs it instead of mucking about with os.Args.
To run the test (while in the genpasswd directory):
go test
The benchmark is for the generation of the default 12-character password.
To run the benchmark (while in the genpasswd directory) run:
go test -bench=.
To launch the profiler (while in the genpasswd directory), there is a shell script for convenience:
./prof.sh