378 lines
9.6 KiB
Groff
378 lines
9.6 KiB
Groff
.\" $NetBSD: etcupdate.8,v 1.12 2006/08/11 20:28:22 hubertf Exp $
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.\"
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.\" Copyright (c) 2001 The NetBSD Foundation, Inc.
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.\" All rights reserved.
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.\"
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.\" This code is derived from software contributed to The NetBSD Foundation
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.\" by Martti Kuparinen.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 3. All advertising materials mentioning features or use of this software
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.\" must display the following acknowledgement:
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.\" This product includes software developed by the NetBSD
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.\" Foundation, Inc. and its contributors.
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.\" 4. Neither the name of The NetBSD Foundation nor the names of its
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.\" contributors may be used to endorse or promote products derived
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.\" from this software without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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.\" POSSIBILITY OF SUCH DAMAGE.
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.\"
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.Dd February 18, 2006
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.Dt ETCUPDATE 8
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.Os
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.Sh NAME
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.Nm etcupdate
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.Nd update the configuration and startup files in
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.Pa /etc
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.Sh SYNOPSIS
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.Nm
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.Op Fl ahlv
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.Op Fl p Ar pager
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.Op Fl s Brq Ar srcdir | Ar tgzfile | Ar tempdir
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.Op Fl t Ar temproot
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.Op Fl w Ar width
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.Sh DESCRIPTION
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.Nm
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is a tool that lets the administrator update the configuration and
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startup files in
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.Pa /etc
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(and some other directories like
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.Pa /dev ,
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.Pa /root
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and
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.Pa /var )
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without having to manually check and modify every file.
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The administrator should run this script after performing an operating
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system update (e.g. after running
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.Pa make build
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in
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.Pa /usr/src
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or after extracting new binary distribution files)
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to update to the latest configuration and startup files.
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.Pp
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.Nm
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compares the new configuration files against the currently installed files.
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The user is given the option of installing, merging or deleting each
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modified or missing file.
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.Nm
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also detects if the user installs certain special files and performs
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corresponding tasks like remaking device nodes or rebuilding a database
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from the
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.Xr aliases 5
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file.
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.Pp
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.Nm
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needs a clean set of new configuration files to compare the
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existing files against.
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These files, called the
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.Dq reference files
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in this manual, may be derived from either a source or binary
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distribution of
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.Nx .
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.Pp
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If the user is updating from sources (which is the default mode),
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.Nm
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will first create a copy of the reference files
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by running
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.Pa make distribution
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in
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.Pa /usr/src/etc ,
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installing the files to a so-called
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.Pa temproot .
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(See usage of the
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.Fl s Ar srcdir
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and
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.Fl t Ar temproot
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options later in this manual page.)
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.Pp
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Instead of using sources, the user can also extract one or more binary
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distribution sets in a special location and use those as the reference
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files (see usage of the
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.Fl s Ar tempdir
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option later in this manual page),
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or specify one or more binary distribution sets directly
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(see usage of the
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.Fl s Ar tgzfile
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option later in this manual page).
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.Pp
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The following options are available:
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.Bl -tag -width XXtXtemprootX
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.It Fl a
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.Nm
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can automatically update files which have not been modified locally.
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The
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.Fl a
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flag instructs
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.Nm
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to store MD5 checksums in
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.Pa /var/etcupdate
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and use these checksums to determine if there have been any
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local modifications.
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.It Fl h
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Prints a help text.
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.It Fl l
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Automatically skip files with unchanged RCS IDs.
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This has the effect of leaving alone files that have been altered
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locally but which have not been changed in the
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reference files.
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Since this works using RCS IDs, files without RCS IDs will not be
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skipped even if only modified locally.
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This flag may be used together with the
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.Fl a
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flag described above.
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.It Fl p Ar pager
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The pager to use when displaying files.
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By default this is
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.Xr more 1
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but it can be changed either with this option
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or by defining the
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.Ev PAGER
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variable.
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.It Fl s Brq Ar srcdir | Ar tgzfile | Ar tempdir
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The location of the reference files, or the
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.Nx
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source files used to create the reference files.
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This may be specified in one of three ways:
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.Bl -tag -width XXsXtempdirXX
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.It Fl s Ar srcdir
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The location of the
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.Nx
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source files used to create the reference files.
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By default this is
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.Pa /usr/src
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but it can be changed either with this option
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or the
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.Ev SRCDIR
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variable.
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Note that
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.Ar srcdir
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should refer to the top of the source directory tree;
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earlier versions of
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.Nm
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expected
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.Ar srcdir
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to refer to the
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.Pa etc
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subdirectory within the source tree.
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.It Fl s Ar tgzfile
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The location of a set file from a binary distribution of
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.Nx .
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The set file is a compressed archive containing reference files.
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This option may be specified twice, to specify the locations of
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both the
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.Pa etc.tgz
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and
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.Pa xetc.tgz
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sets.
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The files from the specified sets will be extracted to the
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.Pa temproot
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directory.
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.It Fl s Ar tempdir
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Location of reference files extracted from a binary distribution of
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.Nx .
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Note that reference files in
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.Pa tempdir
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will be altered and removed by
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.Nm
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when using the
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.Fl s Ar tempdir
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option (as the
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.Pa tempdir
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directory is treated like
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.Pa temproot ) .
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.El
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.It Fl t Ar temproot
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Specifies the location of the
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.Pa temproot
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directory.
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The temporary reference files created from
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the source directory specified by
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.Fl s Ar srcdir ,
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or the temporary reference files extracted from
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the binary tgz sets specified by
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.Fl s Ar tgzfile ,
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will be stored there.
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By default this is
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.Pa /tmp/temproot
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but can be changed either with this option or the
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.Ev TEMPROOT
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environment variable.
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It is an error to specify
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.Fl t Ar temproot
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in conjunction with
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.Fl s Ar tempdir .
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.It Fl v
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Makes
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.Nm
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verbose about its actions.
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.It Fl w Ar width
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Sets screen width used during interactive merge.
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By default this is the number of columns
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.Xr stty 1
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reports but it can be changed either with this
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option or by defining the
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.Ev WIDTH
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variable.
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This is useful for
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.Xr xterm 1
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users with wider shell windows.
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.El
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.Sh ENVIRONMENT
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.Bl -tag -width IGNOREFILESXX
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.It Ev TEMPROOT
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Sets a default value for
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.Pa temproot .
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See
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.Fl t
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above.
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.It Ev SRCDIR
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The location of the
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.Nx
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sources files.
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See
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.Fl s
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above.
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.It Ev PAGER
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The pager to use when displaying files.
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See
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.Fl p
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above.
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.It Ev WIDTH
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The screen width used during interactive merge.
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See
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.Fl w
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above.
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.It Ev IGNOREFILES
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A list of files that
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.Nm
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should ignore.
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Files listed in this
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variable will never be considered for updating by
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.Nm .
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.El
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.Sh FILES
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The environment variables can also be defined in the following configuration
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files.
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The user's personal configuration file settings override the global
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settings.
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.Pp
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/etc/etcupdate.conf
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.Pp
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~/.etcupdaterc
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.Sh EXAMPLES
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You have just upgraded your
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.Nx
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host from 3.0 to 4.0 and now it's time
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to update the configuration files as well.
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To update the configuration files from the sources (if you have the
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.Pa /usr/src/etc
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directory):
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.Pp
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.Dl etcupdate
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.Pp
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The default location of the source files is
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.Pa /usr/src
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but this may be overridden with the
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.Fl s Ar srcdir
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command line argument:
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.Pp
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.Dl etcupdate -s /some/where/src
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.Pp
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To update the configuration files from binary distribution sets
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do something like this:
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.Pp
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.Dl etcupdate -s /some/where/etc.tgz -s /some/where/xetc.tgz
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.Pp
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or like this:
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.Pp
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.Dl mkdir /tmp/temproot
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.Dl cd /tmp/temproot
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.Dl tar -xpzf /some/where/etc.tgz
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.Dl tar -xpzf /some/where/xetc.tgz
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.Dl etcupdate -s /tmp/temproot
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.Pp
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You have modified only few files in the
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.Pa /etc
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directory so you would like install most of the updates without being asked.
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To automatically update the unmodified configuration files:
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.Pp
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.Dl etcupdate -a
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.Pp
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To get a better idea what's going on, use the
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.Fl v
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flag:
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.Pp
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.Dl etcupdate -v
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.Sh SEE ALSO
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.Xr cmp 1 ,
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.Xr more 1 ,
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.Xr rcs 1 ,
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.Xr sdiff 1 ,
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.Xr stty 1 ,
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.Xr aliases 5 ,
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.Xr postinstall 8
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.Sh HISTORY
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The
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.Nm
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command appeared in
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.Nx 1.6 .
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.Pp
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In
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.Nx 4.0 ,
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the
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.Fl s Ar tgzfile
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option was added, the
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.Fl b Ar tempdir
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option was converted to
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.Fl s Ar tempdir ,
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and the
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.Fl s Ar srcdir
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option was changed to refer to the top of the
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source directory tree rather than to the
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.Pa etc
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subdirectory.
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.Sh AUTHORS
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The script was written by
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.An Martti Kuparinen
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.Aq martti@NetBSD.org
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and improved by several other
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.Nx
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users.
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.Pp
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The idea for this script (including code fragments, variable names etc.)
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came from the
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.Fx
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mergemaster (by Douglas Barton).
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Unlike the
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.Fx
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mergemaster, this does not use CVS version tags by default to compare if
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the files need to be updated.
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Files are compared with
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.Xr cmp 1
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as this is more reliable and the only way if the version numbers are the
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same even though the files are different.
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.\" when exactly are the version the same even though the file changes?
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.\" .Pp
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.\" .Sh BUGS
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.\" Because of the use of
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.\" .Xr cmp 1
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.\" to compare files, rather than CVS versions, files that are locally changed
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.\" from the distribution are always considered needing to be updated.
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