Once installed, you can invoke the compiler from the command-line, as such:
$ lessc styles.less
This will output the compiled CSS to stdout, you may then redirect it to a file of your choice:
$ lessc styles.less > styles.css
To output minified CSS, simply pass the -x option. If you would like more involved minification, the Clean CSS is also available with the --clean-css plugin.
To see all the command line options run lessc without parameters or see Usage.
