Date: 17 Apr 2004 04:54:52 -0000 From: Jos Backus <jos@catnook.com> To: FreeBSD-gnats-submit@FreeBSD.org Subject: bin/65649: Add `-u name' option to env(1) Message-ID: <20040417045452.1358.qmail@lizzy.catnook.com> Resent-Message-ID: <200404170500.i3H50f6W092863@freefall.freebsd.org>
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>Number: 65649 >Category: bin >Synopsis: Add `-u name' option to env(1) >Confidential: no >Severity: non-critical >Priority: low >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: change-request >Submitter-Id: current-users >Arrival-Date: Fri Apr 16 22:00:41 PDT 2004 >Closed-Date: >Last-Modified: >Originator: Jos Backus >Release: FreeBSD 5.2-CURRENT i386 >Organization: CatNook >Environment: System: FreeBSD lizzy.catnook.com 5.2-CURRENT FreeBSD 5.2-CURRENT #49: Fri Apr 16 20:26:49 PDT 2004 root@lizzy.catnook.com:/usr/obj/usr/src/sys/LIZZY i386 >Description: This patch adds the `-u name' option to env(1). For a rationale of why this is useful (besides compatibility with GNU coreutils), see this post: http://groups.google.com/groups?hl=en&lr=&ie=UTF-8&oe=UTF-8&selm=b083i6%2486c%241%40news5.svr.pol.co.uk >How-To-Repeat: >Fix: --- env.c.orig Fri Apr 16 21:16:44 2004 +++ env.c Fri Apr 16 21:21:25 2004 @@ -64,13 +64,16 @@ char *cleanenv[1]; int ch; - while ((ch = getopt(argc, argv, "-i")) != -1) + while ((ch = getopt(argc, argv, "-iu:")) != -1) switch(ch) { case '-': case 'i': environ = cleanenv; cleanenv[0] = NULL; break; + case 'u': + unsetenv(optarg); + break; case '?': default: usage(); @@ -90,6 +93,6 @@ usage(void) { (void)fprintf(stderr, - "usage: env [-i] [name=value ...] [utility [argument ...]]\n"); + "usage: env [-i] [[-u name] ...] [name=value ...] [utility [argument ...]]\n"); exit(1); } --- env.1.orig Fri Apr 16 21:16:39 2004 +++ env.1 Fri Apr 16 21:41:17 2004 @@ -44,6 +44,7 @@ .Sh SYNOPSIS .Nm .Op Fl i +.Op Fl u Ar name .Op Ar name Ns = Ns Ar value ... .Op Ar utility Op Ar argument ... .Sh DESCRIPTION @@ -71,6 +72,14 @@ by .Nm is ignored completely. +.It Fl u Ar name +Execute the +.Ar utility +with +.Ar name +removed from the environment, +if it was present in the environment inherited by +.Nm . .El .Pp If no utility is specified, >Release-Note: >Audit-Trail: >Unformatted:
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