EXPORT(1SH)             COMMAND REFERENCE             EXPORT(1SH)



NAME
     export - exports variables to the environment (sh built-in)

SYNOPSIS
     export [ name . . .  ]

DESCRIPTION
     The 'environment' consists of a list of names and
     corresponding values which contain information that the user
     wants all processes to know about.  When a file is executed,
     a copy of the environment is given to the process.  In sh,
     the names in the environment are copied into shell variables
     for use in shell scripts. In order to change the values of
     the entries in the environment, the export command must be
     used.

     The given names are marked for automatic export to the
     environment of subsequently executed commands. If no
     arguments are given, a list of names marked for export is
     printed. Note that this command is not a verb, meaning that
     the variable is marked for export, not put in the
     environment immediately.

     If the -a option is set, all variables are marked for export
     when set or changed.

     Variables which have not been marked for export are not
     copied into the environment, which means that the current
     value will not be known by any child processes. There is no
     way for a child to change the environment of its parent.

     Shell functions may not be exported.

     There is an alternate way of changing the environment for a
     single command. If the command name is preceded by variable
     assignments, these values are copied into the environment
     for the execution of the command. For example, the line:

          TERM=aaa printenv TERM

     will cause the word 'aaa' to be printed, no matter what TERM
     was set to before. The value of the variable is not changed
     in the current shell.

OPTIONS
     -a Marks all variables for export when set or changed.

EXAMPLES
     Certain variables, such as TERM and TERMCAP, are set during
     execution of the .profile file. These must be exported so
     that programs such as ex and more may use them. The
     following portion of the .profile file sets the TERM and



Printed 4/6/89                                                  1

EXPORT(1SH)             COMMAND REFERENCE             EXPORT(1SH)



     TERMCAP variables and exports them for use by other
     programs.

          TERM=aaa-30-s
          TERMCAP=/etc/termcap
          export TERM TERMCAP


RETURN VALUE
     [NO_ERRS]      Command completed without error.

SEE ALSO
     break(1sh), cd(1sh), chdir(1sh), continue(1sh), csh(1csh),
     echo(1sh), eval(1sh), exec(1sh), exit(1sh), hash(1sh),
     login(1), pwd(1sh), read(1sh), readonly(1sh), return(1sh),
     set(1sh), sh(1sh), shift(1sh), test(1sh), times(1sh),
     trap(1sh), type(1sh), ulimit(1sh), umask(1sh), unset(1sh),
     wait(1sh), which(1sh), execve(2), getenv(3c), and
     environ(7).




































Printed 4/6/89                                                  2

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