  putenv
  Builtin Function



      SSyynnooppssiiss
        Change or add an environment variable.

      SSyynnttaaxx
        putenv ( _S_T_R_I_N_G )

      DDeessccrriippttiioonn
        putenv takes a single argument, _S_T_R_I_N_G, of the form:



          "NAME=VALUE"





     putenv make the value of the environment variable NAME equal to
     VALUE by altering an existing variable or creating a new one.

     Exactly how putenv behaves is depends upon the underlying operating
     system implementation.

     On most Unix systems putenv will return  non-zero if an error
     occurred, and zero otherwise.


     SSeeee AAllssoo
        getenv
































