What is a one-sentence summary of the following article?
Make sure there is no electrical current running to your dryer before you handle any parts of it. If your dryer is gas-powered, you should also turn off the gas. Turn the valve connecting your dryer to the gas line to the off position or shut off the main valve that supplies gas to your entire house. Unscrew the flex hose to disconnect the dryer from the gas line and use a gas line cap to seal the line until you're done cleaning the dryer. Failing to disconnect the power can result in moderate shocks to electrocution, so be sure to disconnect it! Slowly pull the dryer away from the wall so you can access the venting hose, the flexible tube connected to the back of your dryer. Depending on your model, the hose may look shiny and silvery or like white corrugated plastic. Loosen and unscrew the clamps that keep the hose attached to the dryer and the wall. Detach each end of the hose and pull out as much lint as you can with your hand. Use a vacuum with a long wand attachment to clean deeper into the tube. Clean out the hose every 6 months or so because lint buildup is a fire hazard. Look at both ends of the hose to check for any kinksthese small depressions can reduce airflow and allow bits of lint to get into the central dryer cabinet. Dryer repair companies can also clean this for you if you don't want to do it yourself. The vent is where the hose attaches to the wall. It's easy for lint to get trapped in the vent. Use a cleaning brush with a long stick attachment to pull out lint, making sure to clean as far into the vent as you can.

Summary:
Unplug the power cord from the wall for safety purposes. Slide the dryer away from the wall to access the exhaust hose. Use a screwdriver to unscrew the clamps that hold the hose in place. Use a dryer vent cleaning brush to clean out lint from the vent.