|View||Working with Applications||Open applications from the command line.||xdg-open, mimeopen, see||open||start "", explorer.exe, (enter filename)|
|View||Working with Files and Directories||Change directory.||cd||cd||cd|
|View||Getting System Info||Show system info.||lsdev, procinfo||system_profiler||msd|
Lsdev and procinfo do not work on Linux VPSs sometimes due to the way disks are provisioned.
|View||Network Commands||Clear DNS Cache||/etc/rc.d/init.d/nscd restart||dscacheutil -flushcache OR sudo killall -HUP mDNSResponder||ipconfig /flushdns|
Older OS X Leopard was "lookupd -flushcache".
|View||Network Commands||Start & Stop Services||service some-service start|stop||net start|stop some-service|
|View||Working with Users||Show a list of a user's processes.||ps -u account_name||(Task Manager)|
|View||Working with Users||Show who is logged in and what they are doing.||w||net session|
|View||Working with Users||Show the current user account.||whoami||set|
There is a whoami command for Windows available in the Resource Kit. Or, you can use set to list the environment variables, of which the username is one.
|View||Working with Users||List how many users are currently logged in.||who | wc -l|
|View||Working with Users||List who is logged in.||who|