2.9BSD/usr/man/man3/getenv.3f

.TH GETENV 3F
.UC
.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 (5))
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(5), execve(2)