Download and install:

curl -L https://github.com/mvsrgc/cofe/releases/download/v1.0/cofe -o cofe
chmod  x cofe
sudo mv cofe /usr/local/bin

Run a 4 minute timer (default): cofe

Run a custom time: cofe 1h cofe 15ms cofe 0.5m cofe 30s cofe 15ms

Output to stdout with no decorations (and write to /tmp/cofe_status): cofe --raw 1m