From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on inbox.vuxu.org X-Spam-Level: X-Spam-Status: No, score=-0.8 required=5.0 tests=DKIM_INVALID,DKIM_SIGNED, MAILING_LIST_MULTI autolearn=ham autolearn_force=no version=3.4.4 Received: (qmail 22286 invoked from network); 15 Nov 2021 16:22:03 -0000 Received: from minnie.tuhs.org (45.79.103.53) by inbox.vuxu.org with ESMTPUTF8; 15 Nov 2021 16:22:03 -0000 Received: by minnie.tuhs.org (Postfix, from userid 112) id 344BE9C61B; Tue, 16 Nov 2021 02:21:58 +1000 (AEST) Received: from minnie.tuhs.org (localhost [127.0.0.1]) by minnie.tuhs.org (Postfix) with ESMTP id 3DEBA9C1E1; Tue, 16 Nov 2021 02:21:32 +1000 (AEST) Authentication-Results: minnie.tuhs.org; dkim=fail reason="signature verification failed" (1024-bit key; secure) header.d=tnetconsulting.net header.i=@tnetconsulting.net header.b="Ui0NNnry"; dkim-atps=neutral Received: by minnie.tuhs.org (Postfix, from userid 112) id C98A09C1E1; Tue, 16 Nov 2021 02:21:28 +1000 (AEST) X-Greylist: delayed 577 seconds by postgrey-1.36 at minnie.tuhs.org; Tue, 16 Nov 2021 02:21:27 AEST Received: from tncsrv06.tnetconsulting.net (tncsrv06.tnetconsulting.net [45.33.28.24]) by minnie.tuhs.org (Postfix) with ESMTPS id A3B2A9BCFF for ; Tue, 16 Nov 2021 02:21:27 +1000 (AEST) Received: from Contact-TNet-Consulting-Abuse-for-assistance by tncsrv06.tnetconsulting.net (8.15.2/8.15.2/Debian-3) with ESMTPSA id 1AFGBmju019476 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NO); Mon, 15 Nov 2021 10:11:49 -0600 DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=tnetconsulting.net; s=2019; t=1636992709; bh=x8wUJbj3oTAwzKVa5nxh8WKuKuo3Mt/TrRKBvgT2vQ8=; h=To:From:Subject:Message-ID:Date:User-Agent:MIME-Version: Content-Type:Cc:Content-Disposition:Content-Language: Content-Transfer-Encoding:Content-Type:Date:From:In-Reply-To: Message-ID:MIME-Version:References:Reply-To:Resent-Date: Resent-From:Resent-To:Resent-Cc:Sender:Subject:To:User-Agent; b=Ui0NNnryWk+3MKHNQNMIaD/eA0el2eBrSx9ZpHKZMV8LHD436AbudcgTzC0fPD6gP ueQKn7+zcHan364s35f0c8WkhmPJvjYcJliGjEWO4s2S23+FrQKtbDNiDUbLWZb+Sh Mxb3RDBCPKU1AG+A5xMNcahLQl0GsHVb1Kscwkrw= To: The Unix Heritage Society , COFF Organization: TNet Consulting Message-ID: Date: Mon, 15 Nov 2021 09:11:49 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.13.0 MIME-Version: 1.0 Content-Type: multipart/signed; protocol="application/pkcs7-signature"; micalg=sha-256; boundary="------------ms000809010100010305090503" Subject: [TUHS] Will someone please explain the history and usage of gpasswd / newgrp / sg? X-BeenThere: tuhs@minnie.tuhs.org X-Mailman-Version: 2.1.26 Precedence: list List-Id: The Unix Heritage Society mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , From: Grant Taylor via TUHS Reply-To: Grant Taylor Errors-To: tuhs-bounces@minnie.tuhs.org Sender: "TUHS" This is a cryptographically signed message in MIME format. --------------ms000809010100010305090503 Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: quoted-printable Hi, Will someone please explain the history and usage of gpasswd / newgrp / s= g? I've run across them again recently while reading old Unix texts. I've=20 been aware of them for years, but I've never actually used them for=20 anything beyond kicking the tires. So I figured that I'd inquire of the = hive mind that is TUHS / COFF. When was the concept of group passwords introduced? What was the problem that group passwords were the solution for? How common was the use of group passwords? I ran into one comment indicating that they used newgrp to work around a = limitation in the number of (secondary) groups in relation to an NFS=20 implementation. Specifically that the implementation of NFS they were=20 using didn't support more than 16 groups. So they would switch their=20 primary group to work around this limit. Does anyone have any interesting stories related to group passwords /=20 gpasswd / newgrp / sg? --=20 Grant. . . . unix || die --------------ms000809010100010305090503 Content-Type: application/pkcs7-signature; name="smime.p7s" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="smime.p7s" Content-Description: S/MIME Cryptographic Signature MIAGCSqGSIb3DQEHAqCAMIACAQExDzANBglghkgBZQMEAgEFADCABgkqhkiG9w0BBwEAAKCC CzkwggUhMIIECaADAgECAhA/wgXwQl9mDHSg5enGHBeSMA0GCSqGSIb3DQEBCwUAMIGWMQsw CQYDVQQGEwJHQjEbMBkGA1UECBMSR3JlYXRlciBNYW5jaGVzdGVyMRAwDgYDVQQHEwdTYWxm b3JkMRgwFgYDVQQKEw9TZWN0aWdvIExpbWl0ZWQxPjA8BgNVBAMTNVNlY3RpZ28gUlNBIENs aWVudCBBdXRoZW50aWNhdGlvbiBhbmQgU2VjdXJlIEVtYWlsIENBMB4XDTIwMTExNjAwMDAw MFoXDTIxMTExNjIzNTk1OVowKzEpMCcGCSqGSIb3DQEJARYaZ3RheWxvckB0bmV0Y29uc3Vs dGluZy5uZXQwggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAwggEKAoIBAQDM6cGNMlSUFPM3zVw+ VgSslz2QRtMj+FerQ0DpmgbhUzqm5hMRe0hMA2OBf41HDAeOV0RKcLx2+HozHlyQST2xagOX 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