99 lines
3.2 KiB
Groff
99 lines
3.2 KiB
Groff
|
.\" Copyright (c) 1980, 1990 The Regents of the University of California.
|
||
|
|
.\" All rights reserved.
|
||
|
|
.\"
|
||
|
|
.\" This code is derived from software contributed to Berkeley by
|
||
|
|
.\" the Institute of Electrical and Electronics Engineers, Inc.
|
||
|
|
.\" Redistribution and use in source and binary forms, with or without
|
||
|
|
.\" modification, are permitted provided that the following conditions
|
||
|
|
.\" are met:
|
||
|
|
.\" 1. Redistributions of source code must retain the above copyright
|
||
|
|
.\" notice, this list of conditions and the following disclaimer.
|
||
|
|
.\" 2. Redistributions in binary form must reproduce the above copyright
|
||
|
|
.\" notice, this list of conditions and the following disclaimer in the
|
||
|
|
.\" documentation and/or other materials provided with the distribution.
|
||
|
|
.\" 3. All advertising materials mentioning features or use of this software
|
||
|
|
.\" must display the following acknowledgement:
|
||
|
|
.\" This product includes software developed by the University of
|
||
|
|
.\" California, Berkeley and its contributors.
|
||
|
|
.\" 4. Neither the name of the University nor the names of its contributors
|
||
|
|
.\" may be used to endorse or promote products derived from this software
|
||
|
|
.\" without specific prior written permission.
|
||
|
|
.\"
|
||
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
||
|
|
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||
|
|
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||
|
|
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
||
|
|
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||
|
|
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||
|
|
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||
|
|
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||
|
|
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||
|
|
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||
|
|
.\" SUCH DAMAGE.
|
||
|
|
.\"
|
||
|
|
.\" @(#)printenv.1 6.7 (Berkeley) 7/28/91
|
||
|
|
.\"
|
||
|
|
.Dd July 28, 1991
|
||
|
|
.Dt PRINTENV 1
|
||
|
|
.Os BSD 3
|
||
|
|
.Sh NAME
|
||
|
|
.Nm printenv , env
|
||
|
|
.Nd print out the environment, set and print environment
|
||
|
|
.Sh SYNOPSIS
|
||
|
|
.Nm printenv
|
||
|
|
.Op Ar name
|
||
|
|
.Nm env
|
||
|
|
.Op Fl
|
||
|
|
.Op Ar name=value ...
|
||
|
|
.Op Ar command
|
||
|
|
.Sh DESCRIPTION
|
||
|
|
.Nm Printenv
|
||
|
|
prints out the names and values of the variables in the environment,
|
||
|
|
with one name/value pair per line. If
|
||
|
|
.Ar name
|
||
|
|
is specified, only
|
||
|
|
its value is printed.
|
||
|
|
.Pp
|
||
|
|
If a
|
||
|
|
.Ar name
|
||
|
|
is specified and it is not defined in the environment,
|
||
|
|
.Nm printenv
|
||
|
|
returns exit status 1, else it returns status 0.
|
||
|
|
.Pp
|
||
|
|
.Nm Env
|
||
|
|
executes
|
||
|
|
.Ar command
|
||
|
|
after modifying the environment as
|
||
|
|
specified on the command line. The option
|
||
|
|
.Ar name=value
|
||
|
|
specifies
|
||
|
|
an environmental variable,
|
||
|
|
.Ar name ,
|
||
|
|
with a value of
|
||
|
|
.Ar value .
|
||
|
|
The option
|
||
|
|
.Sq Fl
|
||
|
|
causes
|
||
|
|
.Nm env
|
||
|
|
to completely ignore the environment
|
||
|
|
it inherits.
|
||
|
|
.Pp
|
||
|
|
If no command is specified,
|
||
|
|
.Nm env
|
||
|
|
prints out the names and values
|
||
|
|
of the variables in the environment, with one name/value pair per line.
|
||
|
|
.Sh SEE ALSO
|
||
|
|
.Xr csh 1 ,
|
||
|
|
.Xr sh 1 ,
|
||
|
|
.Xr execvp 3 ,
|
||
|
|
.Xr environ 7
|
||
|
|
.Sh HISTORY
|
||
|
|
The
|
||
|
|
.Nm printenv
|
||
|
|
command appeared in
|
||
|
|
.Bx 3.0 .
|
||
|
|
.Sh BUGS
|
||
|
|
.Nm Env
|
||
|
|
doesn't handle commands with equal (``='') signs in their
|
||
|
|
names, for obvious reasons.
|