If you see stratus clouds, that's the time to get inside and stay there. Stratus clouds mean rain if it is warm and snow if it is cold. They look like a huge gray blanket that hangs low in the sky. Sometimes stratus clouds are on the ground or very near the ground, and then we call them fog. Usually stratus clouds and fog form when it has been cold out and then warmer, wet air blows in. As the warm air flows over the cold ground or over the cold air near the ground, the water vapor in the warm air condenses into drops of water that make a cloud.
1 Click Environment Variables. In the section System Variables, find the PATH environment variable and select it. Click Edit. If the PATH environment variable does not exist, click New.  In the Edit System Variable (or New System Variable) window, specify the value of the PATH environment variable.
Having more directories in your path will reduce the number of times you get Command not found errors, but might put you at greater risk of activating a Trojan horse. To find out what your path is, at the Unix shell prompt, enter: echo $PATH. Your path will look something like the following. /usr2/username/bin:/usr/local/bin:/usr/bin:. You will see your username in place of username.