getenv.3f

来自「<B>Digital的Unix操作系统VAX 4.2源码</B>」· 3F 代码 · 共 31 行

.\" SCCSID: @(#)getenv.3f	8.1	9/11/90
.TH getenv 3f VAX "" Unsupported
.SH Name
getenv \- get value of environment variables
.SH Syntax
.B subroutine getenv (ename, evalue)
.br
.B character*(*) ename, evalue
.SH Description
.NXR "getenv subroutine (FORTRAN)"
.NXR "environment variable" "getting value"
The
.PN getenv
subroutine searches the environment list
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.
For further information, see
.MS environ 7 .
.SH Files
.ie \nM /usr/ucb/lib/libU77.a
.el /usr/lib/libU77.a
.SH See Also
execve(2), environ(7)