How are shell variables assigned?

Date: Wed, 7 Oct 92 14:28:18 -0500

5.4)  How are shell variables assigned?

      The shells from the C shell category use "set variable=value" for
      variables local to the shell and "setenv variable value" for
      environment variables.  To get rid of variables in these shells
      use unset and unsetenv.  The shells from the Bourne shell
      category use "variable=value" and may require an "export
      VARIABLE_NAME" to place the variable into the environment.  To
      get rid of the variables use unset.

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