4.4BSD/usr/src/share/man/man3f/getenv.3

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.\" Copyright (c) 1983, 1993
.\"	The Regents of the University of California.  All rights reserved.
.\"
.\" This module is believed to contain source code proprietary to AT&T.
.\" Use and redistribution is subject to the Berkeley Software License
.\" Agreement and your Software Agreement with AT&T (Western Electric).
.\"
.\"	@(#)getenv.3	8.1 (Berkeley) 6/5/93
.\"
.TH GETENV 3F "June 5, 1993"
.UC 5
.SH NAME
getenv \- get value of environment variables
.SH SYNOPSIS
.B subroutine getenv (ename, evalue)
.br
.B character*(*) ename, evalue
.SH DESCRIPTION
.I Getenv
.a
searches the environment list
(see
.IR environ (7))
for a string of the form
.IB ename = value
and returns
.I value
in
.I evalue
if such a string is present, otherwise fills
.I evalue
with blanks.
.SH FILES
.ie \nM /usr/ucb/lib/libU77.a
.el /usr/lib/libU77.a
.SH "SEE ALSO"
environ(7), execve(2)