Adding a directory to path

you can prepend a directory to PATH using

> PATH=/path/to/dir:$PATH

you can append a directory to PATH using

> PATH=$PATH:/path/to/dir

you can add multiple at once as well

> PATH=$PATH:/path/to/dir1:/path/to/dir2
> PATH=/path/tp/dir1:/path/to/dir2:$PATH
> PATH=/path/to/dir1:$PATH:/path/to/dir2