FileBaseName (Built-in Mathematica Symbol)

FileBaseName["file"] gives the base name for a file without its extension.

FileExtension (Built-in Mathematica Symbol)

FileExtension["file"] gives the file extension for a file name.

FileNameSplit (Built-in Mathematica Symbol)

FileNameSplit["filename"] splits a file name into a list of parts.

MemoryInUse (Built-in Mathematica Symbol)

MemoryInUse[] gives the number of bytes currently being used to store all data in the current Mathematica kernel session. MemoryInUse[$FrontEnd] gives the number of bytes ...

Placeholder (Built-in Mathematica Symbol)

Placeholder[name] represents a placeholder labeled with name that indicates a place to type.Placeholder[] gives the empty placeholder \[Placeholder].

SystemOptions (Built-in Mathematica Symbol)

SystemOptions["name"] gives the current setting for the internal system option with the specified name.SystemOptions[] gives the current settings for all settable internal ...

$CharacterEncodings (Built-in Mathematica Symbol)

$CharacterEncodings gives the list of character encodings that can be used.

$KernelCount (Built-in Mathematica Symbol)

$KernelCount gives the number of subkernels available for parallel computations.

Specific Compilers (C Compiler Driver Package Tutorial)

The CCompilerDriver package lets you work with C compilers that are installed on your computer. It lets you build executables, libraries, and object files from C source code. ...

Introduction to Manipulate (Mathematica Tutorial)

The single command Manipulate lets you create an astonishing range of interactive applications with just a few lines of input. Manipulate is designed to be used by anyone who ...