is there a command to create a simple PNG/JPG picture file, can be run in terminal/script command on Mac? For now, I'm going to create a simple one color PNG picture file, with parameter to specify wide and length. if it can put text on it, is much better.
![Create PNG/JPG file with commandline on Mac](https://cdn-ak-scissors.b.st-hatena.com/image/square/98d6f053a97a87156775f60757c60865d0f2c47d/height=288;version=1;width=512/https%3A%2F%2Fcdn.sstatic.net%2FSites%2Fstackoverflow%2FImg%2Fapple-touch-icon%402.png%3Fv%3D73d79a89bded)