How do i install less css compiler?

• To Install Less Compiler

  sudo npm install -g less
  

• To know the location of it

  sudo which lessc
  

• To compile ".less" File to ".css"

  lessc /home/--Your LESS File Location--/File.less > /home/--Your CSS File Location--/main.css 
  

/usr/local/bin/ should already be in your $PATH so there's nothing to do.

Simply use lessc like you would any other command. Here's a little snippet showing mine is installed like yours, and it parsing some LESS into CSS.

$ sudo npm install -g less
... npm installs less ...

$ which lessc
/usr/local/bin/lessc

$ lessc - <<< 'a{color:white; strong {color:black}}'
a {
  color: white;
}
a strong {
  color: black;
}