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NAME    [Toc]    [Back]

     environ - user environment

SYNOPSIS    [Toc]    [Back]

     extern char **environ;

DESCRIPTION    [Toc]    [Back]

     An array of  strings  called  the  ``environment''  is  made
available by
     execve(2)  when  a  process  begins.   By  convention  these
strings have the
     form name=value.  The following variables are recognized  by
various commands:

     BLOCKSIZE   The size of the block units used by several commands, most notably
 df(1), du(1), and ls(1).  May be  specified
in units of a
                byte  by specifying a number, in units of a kilobyte by specifying
 a number followed by `K' or `k',  in  units
of a megabyte
                by specifying a number followed by `M' or `m', or
in units of
                a gigabyte by specifying a number followed by `G'
or `g'.
                Sizes less than 512 bytes or greater than a gigabyte are ignored.

     EXINIT     A list of startup  commands  read  by  ex(1)  and

     HOME        The user's login directory, set by login(1) from
the password
                file passwd(5).

     LOGNAME    The login name of the user.

     PATH       The sequence of directories, separated by colons,
searched by
                csh(1), sh(1), ksh(1), system(3), execvp(3), etc.
when looking
                for an executable file.   Initially  set  to  the
value of
                _PATH_DEFPATH    by    login(1),    traditionally
/usr/bin:/bin, but
                expanded    to    include    /usr/sbin,    /sbin,
/usr/X11R6/bin, and
                /usr/local/bin in OpenBSD.

     PRINTER     The  name  of  the default printer to be used by
lpq(1), lpr(1),
                and lprm(1).

     PWD        The current working directory.

     SHELL      The full pathname of the user's login shell.

     TERM       The kind of terminal for which output  is  to  be
prepared.  This
                information  is used by commands such as nroff(1)
which may exploit
 special terminal capabilities.  See
                /usr/share/misc/termcap (termcap(5)) for  a  list
of terminal

     TERMCAP     The  string describing the terminal in TERM, or,
if it begins
                with a `/', the name of the  termcap  file.   See
                termcap(5), and termcap(3).

     TERMPATH    A  sequence of pathnames of termcap files, separated by colons
                or spaces, which are searched  for  terminal  descriptions in the
                order  listed.   Having no TERMPATH is equivalent
                of $HOME/.termcap:/etc/termcap.  TERMPATH is  ignored if
                TERMCAP contains a full pathname.

     TMPDIR      The directory in which to store temporary files.
Most applications
 use either  /tmp  or  /var/tmp.   Setting
this variable
                will make them use another directory.

     TZ          The  timezone to use when displaying dates.  The
normal format
                is a pathname  relative  to  /usr/share/zoneinfo.
For example,
                the  command  env TZ=US/Pacific date displays the
current time
                in California.  See tzset(3)  for  more  information.

     USER       Deprecated synonym of LOGNAME (for backwards compatibility).

     Further names may be placed in the environment by the export
command and
     name=value  arguments  in sh(1), or by the setenv command if
you use
     csh(1).  It is unwise to change certain sh(1) variables that
are frequently
  exported by .profile files, such as MAIL, PS1, PS2,
and IFS, unless
 you know what you are doing.

SEE ALSO    [Toc]    [Back]

     csh(1), env(1),  ex(1),  login(1),  sh(1),  execve(2),  execle(3), system(3),
     termcap(3), tzset(3), termcap(5)

HISTORY    [Toc]    [Back]

     The environ manual page appeared in 4.2BSD.

OpenBSD      3.6                          April      19,     1994
[ Back ]
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