env(3) [plan9 man page]

ENV(3)							     Library Functions Manual							    ENV(3)

NAME

       env - environment variables

SYNOPSIS

       bind #e /env

       /env/var1
       /env/var2
	...

DESCRIPTION

       The env device serves a one-level directory containing files with arbitrary names and contents.	The intention is that the file name is the
       name of an environment variable (see rc(1)), and the content is the variable's current value.

       When a fork(2) system call creates a new process, both the parent and the child continue to see exactly the same files in the  env  device:
       changes made in either process can be noticed by the other.  In contrast, an rfork system call with the RFENVG bit set (see fork(2)) causes
       a split: initially both process groups see the same environment files, but any changes made in one process group cannot be noticed  by  the
       other.  An rfork with RFCENVG splits and then clears the environment.

SEE ALSO

       rc(1), fork(2)

SOURCE

       /sys/src/9/port/devenv.c

BUGS

       A write starting at an offset after the current extent of a file yields an error instead of zero filling.

																	    ENV(3)

ENV(1)								   User Commands							    ENV(1)

NAME

       env - run a program in a modified environment

SYNOPSIS

       env [OPTION]... [-] [NAME=VALUE]... [COMMAND [ARG]...]

DESCRIPTION

       Set each NAME to VALUE in the environment and run COMMAND.

       -i, --ignore-environment
	      start with an empty environment

       -0, --null
	      end each output line with 0 byte rather than newline

       -u, --unset=NAME
	      remove variable from the environment

       --help display this help and exit

       --version
	      output version information and exit

       A mere - implies -i.  If no COMMAND, print the resulting environment.

AUTHOR

       Written by Richard Mlynarik and David MacKenzie.

REPORTING BUGS

       Report env bugs to bug-coreutils@gnu.org
       GNU coreutils home page: <http://www.gnu.org/software/coreutils/>
       General help using GNU software: <http://www.gnu.org/gethelp/>
       Report env translation bugs to <http://translationproject.org/team/>

COPYRIGHT

       Copyright (C) 2010 Free Software Foundation, Inc.  License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
       This is free software: you are free to change and redistribute it.  There is NO WARRANTY, to the extent permitted by law.

SEE ALSO

       The  full  documentation  for env is maintained as a Texinfo manual.  If the info and env programs are properly installed at your site, the
       command

	      info coreutils 'env invocation'

       should give you access to the complete manual.

GNU coreutils 8.5						   February 2011							    ENV(1)