diff options
Diffstat (limited to 'lib/libc/stdlib/getenv.3')
| -rw-r--r-- | lib/libc/stdlib/getenv.3 | 20 |
1 files changed, 18 insertions, 2 deletions
diff --git a/lib/libc/stdlib/getenv.3 b/lib/libc/stdlib/getenv.3 index e662b86d214b..5566d7b01dcd 100644 --- a/lib/libc/stdlib/getenv.3 +++ b/lib/libc/stdlib/getenv.3 @@ -32,10 +32,11 @@ .\" @(#)getenv.3 8.2 (Berkeley) 12/11/93 .\" $FreeBSD$ .\" -.Dd June 20, 2007 +.Dd November 7, 2021 .Dt GETENV 3 .Os .Sh NAME +.Nm clearenv , .Nm getenv , .Nm putenv , .Nm setenv , @@ -45,6 +46,8 @@ .Lb libc .Sh SYNOPSIS .In stdlib.h +.Ft int +.Fn clearenv "void" .Ft char * .Fn getenv "const char *name" .Ft int @@ -59,6 +62,14 @@ host .Em environment list . .Pp The +.Fn clearenv +function clears all environment variables. +New variables can be added using +.Fn setenv +and +.Fn putenv . +.Pp +The .Fn getenv function obtains the current value of the environment variable, .Fa name . @@ -128,7 +139,7 @@ is not in the current environment, .Dv NULL is returned. .Pp -.Rv -std setenv putenv unsetenv +.Rv -std clearenv setenv putenv unsetenv .Sh ERRORS .Bl -tag -width Er .It Bq Er EINVAL @@ -211,6 +222,11 @@ This was changed to use as the memory location of the ``name=value'' pair to follow the .Tn POSIX specification. +.Pp +The +.Fn clearenv +was added in +.Fx 14 . .Sh BUGS Successive calls to .Fn setenv |