## System commands

APLX supports a range of commands ('system commands') which are used to communicate directly with the system. They are not part of the APL language itself. APL system commands start with a right parenthesis:

                 )SAVE

The display generated by a system command cannot directly be used as the argument to a function. However, in APLX, system commands can be executed using the (execute) primitive:

                 LIB
          [1] © Show contents of library 0
          [2] ')LIB'
          [3]

The output from executed system commands can be captured in a variable or passed as an argument to a function:

                X')SYMBOLS'
                X
          IS 1026, USED 21

See the reference section on System Commands for a full list of available commands.

Topic: APLX Help : Help on APL language : APL Fundamentals : System commands

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