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3.6 SCM Session

— Function: quit
— Function: quit n
— Function: exit
— Function: exit n

Aliases for exit (see exit). On many systems, SCM can also tail-call another program. See execp.

— Callback procedure: boot-tail dumped?

boot-tail is called by scm_top_level just before entering interactive top-level. If boot-tail calls quit, then interactive top-level is not entered.

— Function: program-arguments

Returns a list of strings of the arguments scm was called with.

— Function: getlogin

Returns the (login) name of the user logged in on the controlling terminal of the process, or #f if this information cannot be determined.

For documentation of the procedures getenv and system See System Interface.

SCM extends getenv as suggested by draft SRFI-98:

— Function: getenv name

Looks up name, a string, in the program environment. If name is found a string of its value is returned. Otherwise, #f is returned. — Function: getenv

Returns names and values of all the environment variables as an association-list.

          (getenv)  ⇒
          (("PATH" . "/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin")
           ("USERNAME" . "taro"))
— Function: vms-debug

If SCM is compiled under VMS this vms-debug will invoke the VMS debugger.