xcode online simulator

Recently in the use of some of the Linux commands, but a long time ago the Linux virtual machine was deleted, and do not want to practice a few commands to toss over the virtual machine. So, just try to search, see if there is no online Linux simulator can be used, as long as you can practice the use of commands. Google in the English keyword search, there are really Daniel made some

/get_activity:found ACTIVITY has 3 list is: [ClassSecondriver.app.TestActivitiesActivity, Class secondriver.app.OneActivity, class secondriver.app.twoactivity]11-1520:07:31.899 10665-10665/secondriver.app d/get_activity:last ACTIVITY has 2 list is: [Class Secondriver.app.OneActivity, class Secondriver.app.TwoActivity]from the log you can see that 3 activity classes were found, the auxiliary activity was removed, and 2 item items were displayed in the ListView. 4. ResultsHere is not the result, r