Wolfram System Session Information

The Wolfram Language gives you immediate access to many details of your Wolfram System sessionin the form of symbolic expressions that can readily be manipulated by the Wolfram Language.

ReferenceReference

Names names of known symbols

?name information about symbol values, functions, etc.

Streams  ▪  Links  ▪  Notebooks  ▪  $Packages  ▪  $ContextPath

SystemInformation display system information

NotebookInformation information on open notebooks

Options  ▪  $FrontEndSession  ▪  $FrontEnd  ▪  CurrentValue

Directory  ▪  FileNames  ▪  $Path

$SessionID  ▪  $ProcessID  ▪  $UserName

Time Information »

TimeUsed  ▪  SessionTime  ▪  DateString  ▪  AbsoluteTime  ▪  ...

Memory Information »

MemoryInUse  ▪  MaxMemoryUsed  ▪  ...