FileHash["file"] gives an integer hash code for the contents of the specified file.FileHash["file", " type"] gives an integer hash of the specified type.
FileNameJoin[{"name_1", "name_2", ...}] joins the name_i together into a file name suitable for your current operating system.
FileNames[] lists all files in the current working directory. FileNames[form] lists all files in the current working directory whose names match the string pattern form. ...
FindFile[name] finds the file with the specified name that would be loaded by Get[name] and related functions.
InstallService["url"] installs the web service operations in the WSDL description at the URL given.InstallService["url", "context`"] installs web service operations, creating ...
Kernels
(Built-in Mathematica Symbol) Kernels[] gives the list of running kernels available for parallel computing.
Refresh
(Built-in Mathematica Symbol) Refresh[expr, opts] represents an object whose value in a Dynamic should be refreshed at times specified by the options opts. Refresh[expr, None] specifies that the value of ...
SendMail[rules] sends an email message built up from the elements specified in rules.
$KernelID is a unique ID number assigned to each running parallel kernel.
$MessageGroups is the list of rules that gives named message groups used in functions like On and Quiet.