From sacadmin Tue Jul 25 08:56:39 2006 Received: from eastmail1bur.East.Sun.COM (eastmail1bur.East.Sun.COM [129.148.9.49]) by sac.sfbay.sun.com (8.13.6+Sun/8.13.6) with ESMTP id k6PFudDX023844 for ; Tue, 25 Jul 2006 08:56:39 -0700 (PDT) Received: from thunk.east.sun.com (thunk.East.Sun.COM [129.148.174.66]) by eastmail1bur.East.Sun.COM (8.13.6+Sun/8.13.6/ENSMAIL,v2.2) with ESMTP id k6PFubSY007596; Tue, 25 Jul 2006 11:56:37 -0400 (EDT) Received: from 127.0.0.1 (localhost [127.0.0.1]) by thunk.east.sun.com (8.13.6+Sun/8.13.6) with ESMTP id k6PFuahX001428; Tue, 25 Jul 2006 11:56:36 -0400 (EDT) Subject: 2006/450 du option merge From: Bill Sommerfeld To: psarc@sac.sfbay.sun.com Cc: cynthia.eastham@sun.com, peter.tribble@gmail.com Content-Type: text/plain; charset=ISO-8859-1 Message-Id: <1153842996.1267.10.camel@thunk> Mime-Version: 1.0 X-Mailer: Ximian Evolution 1.4.6.338 Date: Tue, 25 Jul 2006 11:56:36 -0400 Content-Transfer-Encoding: 7bit Status: RO Content-Length: 3370 I'm sponsoring this case for Cynthia Eastham and Peter Tribble. Release binding is "Patch"; the interface stability for the new options will be Committed. Review timer expires on 8/1/2006; the case should be on the agenda of tomorrow's PSARC meeting and could be approved then. Summary: This case proposes that the -x and -d options to the du command be made available in both /usr/bin and /usr/xpg4/bin variants of the command, and that the -m option be added to show usage in terms of megabytes. Details: At present, the /usr/bin and /usr/xpg4/bin variants of the du utility have a flag to constrain the usage to a single filesystem - Solaris uses -d, while XPG4 uses -x. It is proposed that each allow the other, so that users may use -d or -x irrespective of which variant of the command is invoked. This will simplify migration for users of other operating systems, where the -x form is commonly used. It also encourages users of /usr/bin/du to use the standards-compliant syntax, and allows the XPG4 variant to be used without breaking existing scripts. In order to eliminate differences in behaviour completely, it is also proposed to support the -o option in /usr/xpg4/bin/du in addition to /usr/bin/du. This case follows previous ARC opinion [1] that non-conflicting functionality present in /usr/xpgN/bin variants of commands should be present in default command variants found in /usr/bin/. It is further proposed that the -m flag be added to show usage in megabytes (similar to the use of the -k flag to show usage in kilobytes). Not only does this bring du into line with the versions available in other operating systems (such as Linux and FreeBSD), it makes the output less congested for larger filesystems. The human readable format does not address the same need, as that cannot be parsed by other programs. As a concrete example of the problems currently experienced, the xdu graphical display utility fails with du -k output on a filesystem over 2 terabytes as the output is too large to be represented by a 32-bit signed integer. BugID 4858191 requested the addition of -m and -g. It is not proposed to add -g at this time: while GNU du supports -m, it does not support -g. Implementation is expected to be straightforward, as it largely involves removing the #ifdef statements that selectively hide the available options. Bug/RFE Number(s): 6269516 *du* should always accept -x 4858191 *du* du(1M) wants to have -m/-g option to show mega/giga byte size info Interfaces: /usr/bin/du gains the -x and -m options; /usr/xpg4/bin/du gains the -d, -o, and -m options. The interface stability for all added options will be Committed. Doc Impact: The du(1M) man page will need to be modified to reflect that there are no longer option differences between the /usr/bin and /usr/xpg4/bin variants, and will need to be amended to include the new -m option. Reference [1] PSARC/2005/683: Add /usr/xpg4/bin/crontab and /usr/xpg6/bin/crontab. From sacadmin Wed Jul 26 16:11:48 2006 Received: from localhost.sfbay.sun.com (punchin-sommerfeld.SFBay.Sun.COM [192.9.61.12]) by sac.sfbay.sun.com (8.13.6+Sun/8.13.6) with ESMTP id k6QNBlCE002264 for ; Wed, 26 Jul 2006 16:11:48 -0700 (PDT) Received: from localhost.sfbay.sun.com (localhost [127.0.0.1]) by localhost.sfbay.sun.com (8.13.6+Sun/8.13.6) with ESMTP id k6QNBVFC006435; Wed, 26 Jul 2006 23:11:31 GMT Received: (from sommerfeld@localhost) by localhost.sfbay.sun.com (8.13.6+Sun/8.13.6/Submit) id k6QNBUDP006434; Wed, 26 Jul 2006 19:11:30 -0400 (EDT) X-Authentication-Warning: localhost.sfbay.sun.com: sommerfeld set sender to sommerfeld@sun.com using -f Subject: Re: 2006/450 du option merge From: Bill Sommerfeld To: psarc@sac.sfbay.sun.com Cc: cynthia.eastham@sun.com, peter.tribble@gmail.com In-Reply-To: <1153842996.1267.10.camel@thunk> References: <1153842996.1267.10.camel@thunk> Content-Type: text/plain Content-Transfer-Encoding: 7bit Message-Id: <1153955489.6355.0.camel@localhost> Mime-Version: 1.0 X-Mailer: Ximian Evolution 1.4.6.340 Date: Wed, 26 Jul 2006 19:11:29 -0400 Status: RO Content-Length: 67 This case was approved during today's PSARC meeting. - Bill