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  1931      ]

  1932     "

  1933 !

  1934 

  1935 executeCommand:aCommandString outputTo:anOutStreamOrNil errorTo:anErrStreamOrNil

  1936     "execute the unix command specified by the argument, aCommandString.

  1937      If aCommandString is a String, the commandString is passed to a shell for execution

  1938      - see the description of 'sh -c' in your UNIX manual ('cmd.com' in your MSDOS manual).

  1939      If aCommandString is an Array, the first element is the command to be executed,

  1940      and the other elements are the arguments to the command. No shell is invoked in this case.

  1941      Return true if successful, false otherwise."

  1942 

  1943      ^ self

  1944         executeCommand:aCommandString

  1945         inputFrom:nil

  1946         outputTo:anOutStreamOrNil

  1947         errorTo:anErrStreamOrNil

  1948         auxFrom:nil

  1949         environment:nil

  1950         inDirectory:nil

  1951         lineWise:false

  1952         onError:[:status| false]

  1953 

  1954     "

  1955      String streamContents:[:s|OperatingSystem

  1956         executeCommand:'ls'

  1957         outputTo:s

  1958      ]

  1959     "

  1960 

  1961     "

  1962      String streamContents:[:s|OperatingSystem

  1963         executeCommand:'pwd'

  1964         outputTo:s