.TH WIMLIB-IMAGEX "1" "June 2014" "@IMAGEX_PROGNAME@ @VERSION@" "User Commands"
.SH NAME
@IMAGEX_PROGNAME@-update \- Update a WIM image
.SH SYNOPSIS
\fB@IMAGEX_PROGNAME@ update\fR \fIWIMFILE\fR [\fIIMAGE\fR] [\fIOPTION\fR...] [< \fICMDFILE\fR]
.SH DESCRIPTION
\fB@IMAGEX_PROGNAME@ update\fR modifies the specified \fIIMAGE\fR in the Windows
Imaging (WIM) file \fIWIMFILE\fR by adding, deleting, or renaming files or
directories in it.
This command is also available as simply \fBwimupdate\fR if the appropriate
hard link or batch file has been installed.
.PP
\fIIMAGE\fR specifies the image in \fIWIMFILE\fR to update.  It may be a 1-based
index of an image in the WIM or the name of an image in the WIM.  Use the
\fB@IMAGEX_PROGNAME@ info\fR (1) command to list the images a WIM file contains.
\fIIMAGE\fR may be omitted if \fIWIMFILE\fR contains only one image.
.PP
The modifications to perform on the WIM image are specified as a sequence of
commands, one per line, read in a text file from standard input.  It is
recommended that standard input be redirected from a file (\fICMDFILE\fR), as
shown above, rather than typing in commands interactively.  Alternatively, to
specify a command directly on the command line, see the \fB--command\fR option.
.SH AVAILABLE COMMANDS
This section documents the commands that may appear in the \fICMDFILE\fR
described above.
.SS \fBadd\fR [\fIOPTION\fR...] \fISOURCE\fR \fIDESTINATION\fR
Add a file or directory tree to the WIM image.  \fISOURCE\fR must specify the
path to a file or directory on your filesystem.  \fIDESTINATION\fR must specify
the path inside the WIM image at which to add the file or directory tree.
.PP
If \fIDESTINATION\fR names an existing directory in the WIM image, then
\fISOURCE\fR must also name a directory.  This causes the contents of the
\fISOURCE\fR directory to be added to the \fIDESTINATION\fR directory.
.PP
If \fIDESTINATION\fR names an existing nondirectory file in the WIM image, then
\fISOURCE\fR must also name a nondirectory file.  By default, this causes the
\fIDESTINATION\fR file to be replaced with the \fISOURCE\fR file.  Or, with
\fB--no-replace\fR specified, this generates an error.
.PP
If \fIDESTINATION\fR does not exist in the WIM image, then any prerequisite
directories are created as needed to add the \fISOURCE\fR at that location.
.PP
The \fBadd\fR command supports a subset of the options accepted by
\fB@IMAGEX_PROGNAME@ capture\fR; namely, \fB--dereference\fR,
\fB--unix-data\fR, \fB--no-acls\fR, and \fB--strict-acls\fR.  See
\fB@IMAGEX_PROGNAME@-capture\fR (1) for explanations of these options.
.PP
In addition, the \fBadd\fR command supports the \fB--no-replace\fR option, which
causes the \fBadd\fR command to refuse to overwrite existing nondirectory files
in the WIM image.
.SS \fBdelete\fR [\fIOPTION\fR...] \fIPATH\fR
Delete a file or directory tree from the WIM image.  \fIPATH\fR must specify the
path inside the WIM image of the file or directory tree to delete.
.PP
The available options for the \fBdelete\fR command are:
.TP 6
\fB--force\fR
Do not issue an error if the path to delete does not exist.
.TP
\fB--recursive\fR
Delete the file or directory tree recursively; if not specified, an error is
issued if the path to delete is a directory.
.SS \fBrename\fR \fIOLD_PATH\fR \fINEW_PATH\fR
Rename a file or directory tree inside the WIM image.  \fIOLD_PATH\fR must
specify the old path of the file or directory tree inside the WIM image, and
\fINEW_PATH\fR must specify the new path for the file or directory tree.  This
command follows the semantics of the POSIX \fBrename\fR (3) function; in
particular, a pre-existing file at \fINEW_PATH\fR will be deleted if present,
except in certain cases such as attempting to rename a directory to a
non-directory, which is not allowed.
.PP
There are no options available for the \fBrename\fR command.
.SH OPTIONS
The following options are accepted on the command line by \fB@IMAGEX_PROGNAME@
update\fR itself:
.TP 6
\fB--dereference\fR
Use \fB--dereference\fR for all \fBadd\fR commands.
.TP
\fB--unix-data\fR
Use \fB--unix-data\fR for all \fBadd\fR commands.
.TP
\fB--no-acls\fR
Use \fB--no-acls\fR for all \fBadd\fR commands.
.TP
\fB--strict-acls\fR
Use \fB--strict-acls\fR for all \fBadd\fR commands.
.TP
\fB--no-replace\fR
Use \fB--no-replace\fR for all \fBadd\fR commands.
.TP
\fB--config\fR=\fIFILE\fR
Set the capture configuration file for all \fBadd\fR commands.  See the
description of this option in \fB@IMAGEX_PROGNAME@-capture\fR (1).
.TP
\fB--force\fR
Use \fB--force\fR for all \fBdelete\fR commands.
.TP
\fB--recursive\fR
Use \fB--recursive\fR for all \fBdelete\fR commands.
.TP
\fB--check\fR
When reading \fIWIMFILE\fR, verify its integrity if the integrity table is
present; in addition, include an integrity table in the updated WIM.  If this
option is not specified, an integrity table will be included in the updated WIM
if and only if one was present before.
.TP
\fB--threads\fR=\fINUM_THREADS\fR
Number of threads to use for compressing newly added files.  Default: autodetect
(number of processors).
.TP
\fB--rebuild\fR
Rebuild the entire WIM rather than appending the updated data to the end of it.
Rebuilding the WIM is slower, but will save a little bit of space that would
otherwise be left as a hole in the WIM file.
.IP
See \fB@IMAGEX_PROGNAME@-optimize\fR (1) for a more customizable way of
rebuilding (and optionally recompressing) a WIM file.  If running
\fB@IMAGEX_PROGNAME@ optimize\fR after \fB@IMAGEX_PROGNAME@ update\fR, there is
no need to specify \fB--rebuild\fR to \fB@IMAGEX_PROGNAME@ update\fR.
.TP
\fB--command\fR=\fISTRING\fR
Instead of reading update commands from standard input, read a single update
command directly from the string \fISTRING\fR specified on the command line.
This option cannot be provided more than one time and cannot be used to specify
more than one update command.  Note that the \fISTRING\fR, as well as any
paths containing spaces within the \fISTRING\fR must be appropriately quoted.
If running from cmd.exe on Windows, you should use double quotes for the outer
quotes and single quotes for the inner quotes.  Example:
.RS
.RS
.PP
.nf
@IMAGEX_PROGNAME@ update boot.wim 1 \\
.br
.RS
--command="add 'C:\\My Dir' '\\My Dir'"
.RE
.RE
.RE
.fi
.IP
This option is provided for convenience only.  Do not execute
\fB@IMAGEX_PROGNAME@ update\fR multiple consecutive times, each time passing the
\fB--command\fR option!  This is inefficient.  Instead, generate an update
command file and provide it (on standard input) to a single invocation of
\fB@IMAGEX_PROGNAME@ update\fR, as explained in this document.
.TP
\fB--wimboot-config\fR=\fIFILE\fR
If this option is specified, no commands shall be read from standard input, and
instead the following command shall be executed:
.IP
.nf
.RS
.RS
\fBadd\fR \fIFILE\fR /Windows/System32/WimBootCompress.ini
.RE
.RE
.fi
.IP
This sets \fIFILE\fR as the WIMBoot configuration file for the image.  The
[PrepopulateList] section of this file specifies path globs that shall not be
extracted as WIMBoot pointer files (perhaps due to being needed early in the
boot process).  See the documentation for the \fB--wimboot\fR option of
\fB@IMAGEX_PROGNAME@ apply\fR (1) for more information.
.SH NOTES
\fB@IMAGEX_PROGNAME@ update\fR is partly redundant with \fB@IMAGEX_PROGNAME@
mountrw\fR, since if a WIM image can be mounted read-write, then there
theoretically is no need for \fB@IMAGEX_PROGNAME@ update\fR.  The main advantage
of \fB@IMAGEX_PROGNAME@ update\fR is that it works on both UNIX-like systems and
Windows, whereas \fB@IMAGEX_PROGNAME@ mountrw\fR is only available on UNIX-like
systems, and even then it only works on those with a compatible FUSE
implementation.
.PP
Symbolic links inside a WIM image are not dereferenced when being interpreted.
So, for example, if you have a WIM image that contains a symbolic link
"/Documents and Settings" -> "/Users" where "/Users" is a directory, then a
subdirectory named "Public" in this directory must be specified as
"/Users/Public" rather than "/Documents and Settings/Public".
.PP
All paths to files or directories within the WIM image must be specified
relative to the root of the image.  However, the leading slash is optional, and
both forward slashes and backslashes are accepted.  In addition, on Windows, the
paths are by default treated case-insensitively, while on UNIX-like systems, the
paths are by default treated case-sensitively.  The default case sensitivity may
be changed by setting the \fBWIMLIB_IMAGEX_IGNORE_CASE\fR environmental
variable to 0 or 1.
.PP
The command file (\fICMDFILE\fR) is parsed by \fB@IMAGEX_PROGNAME@ update\fR
itself and not by the system shell.  Therefore, its syntax is limited.  However,
comment lines beginning with '#' are allowed, and it is also possible to quote
arguments with whitespace inside them.
.PP
On UNIX-like systems, you cannot use \fB@IMAGEX_PROGNAME@ update\fR to add files
to an image directly from an NTFS volume using libntfs-3g, even though
\fB@IMAGEX_PROGNAME@ capture\fR supports capturing a full image this way.
.PP
It is safe to abort an \fB@IMAGEX_PROGNAME@ update\fR command partway through;
however, after doing this, it is recommended to run \fB@IMAGEX_PROGNAME@
optimize\fR to remove any data that was appended to the physical WIM file but
not yet incorporated into the structure of the WIM, unless \fB--rebuild\fR was
specified, in which case you should delete the temporary file left over.
.SH EXAMPLES
All the examples below show the update command file to be created as well as the
\fB@IMAGEX_PROGNAME@ update\fR command to run to perform the updates.
.PP
Delete two files from a WIM image:
.PP
.RS
\fIupdate_commands.txt\fR:
.RS
.PP
.nf
delete /setup.exe
delete /sources/setup.exe
.fi
.RE
.RE
.PP
.RS
$ @IMAGEX_PROGNAME@ update boot.wim 2 < update_commands.txt
.RE
.PP
Add some files and directories to a WIM image.  Note that the first path of each
\fBadd\fR command specifies the files to add, while the second path of each
\fBadd\fR command specify the locations at which to to add them inside the WIM
image:
.PP
.RS
\fIupdate_commands.txt\fR:
.RS
.PP
.nf
add somedir     /dir
add somefile    /dir/file
.fi
.RE
.RE
.PP
.RS
$ @IMAGEX_PROGNAME@ update boot.wim 2 < update_commands.txt
.RE
.PP
Rename a file inside a WIM image.
.PP
.RS
\fIupdate_commands.txt\fR:
.RS
.PP
.nf
rename /dir_in_wim/oldfile.txt /dir_in_wim/newfile.txt
.fi
.RE
.RE
.PP
.RS
$ @IMAGEX_PROGNAME@ update boot.wim 2 < update_commands.txt
.RE
.PP
Using additional features, such as comments, options, and overlays, and
including an integrity table in the updated WIM:
.PP
.RS
\fIupdate_commands.txt\fR:
.RS
.PP
.nf
#
# This file specifies some changes to make to a WIM image.
#

# Add a new directory containing files I want in the image.
# The quotes are necessary because the directory name
# contains a space.
add "My Directory" "/My Directory"

# Add the contents of "Another Directory" to the
# "/My Directory" we just created in the WIM image.  Since
# the destination path already exists, this performs an
# overlay.
add "Another Directory" "/My Directory"

# Rename some file for some reason.
rename /dir_in_wim/oldfile.txt /dir_in_wim/newfile.txt

# Delete an unwanted directory.
delete --recursive /Users/Me/Documents/Junk
.fi
.RE
.RE
.PP
.RS
$ @IMAGEX_PROGNAME@ update boot.wim 2 --check < update_commands.txt
.RE
.PP
.SH SEE ALSO
.BR @IMAGEX_PROGNAME@ (1)
.BR @IMAGEX_PROGNAME@-capture (1)
.BR @IMAGEX_PROGNAME@-info (1)
.BR @IMAGEX_PROGNAME@-mountrw (1)
.BR @IMAGEX_PROGNAME@-optimize (1)