# task > Command-line to-do list manager. > More information: . - Add a new task which is due tomorrow: `task add {{description}} due:{{tomorrow}}` - Update a task's priority: `task {{task_id}} modify priority:{{H|M|L}}` - Complete a task: `task {{task_id}} done` - Delete a task: `task {{task_id}} delete` - List all open tasks: `task list` - List open tasks due before the end of the week: `task list due.before:{{eow}}` - Show a graphical burndown chart, by day: `task burndown.daily` - List all reports: `task reports`