Ubuntu Manpage: wimlib-imagex-optimize

NAME

       wimlib-imagex-optimize - Optimize a WIM archive

SYNOPSIS

       wimlib-imagex optimize WIMFILE [OPTION...]

DESCRIPTION

       wimlib-imagex  optimize  will rebuild the stand-alone WIM WIMFILE.  The new WIM is written to a temporary
       file, and it is renamed to the original file when it's ready.  This action will  remove  any  holes  that
       have been left as a result of appending images, so the new WIM may be slightly smaller than the old WIM.

       By   default,  compressed  data  will  be  re-used,  and  not  recompressed.   Use  the  --recompress  or
       --compress=TYPE[:LEVEL] option to request recompression.

       This command is also available as simply wimoptimize if the appropriate hard link or batch file has  been
       installed.

OPTIONS

--check
When reading WIMFILE, verify its integrity if an integrity table is present. In addition, include
an integrity table in the optimized WIM. If this option is not specified, by default the integrity
table (if present) is not checked, and an integrity table is included in the rebuilt WIM if and
only if one was present in the original WIM.

--nocheck
Neither verify the integrity of WIMFILE using the integrity table, nor include an integrity table
in the rebuilt WIM file.

--recompress
Recompress all compressed streams in WIMFILE when rebuilding it. This will greatly increase the
time needed to rebuild the WIM file, but it may result in a better compression ratio if wimlib can
do a better job than the program that wrote the original file.

--compress=TYPE[:LEVEL]
Recompress the WIM file using the specified compression type, and optionally the specified
compression level for that compression type. This implies --recompress.

See the documentation for this option to wimlib-imagex capture (1) for more details.

--chunk-size=SIZE
Set the WIM compression chunk size to SIZE. See the documentation for this option to wimlib-imagex
capture (1) for more details.

--solid
Create a "solid" archive that compresses multiple files together. This can result in a higher
compression ratio, but has disadvantages such as reduced compatibility. See the documentation for
this option to wimlib-imagex capture (1) for more details.

--solid-chunk-size=SIZE
Like --chunk-size, but set the chunk size used in solid resources. See the documentation for this
option to wimlib-imagex capture (1) for more details.

--solid-compress=TYPE[:LEVEL]
Like --compress, but set the compression type used in solid resources. See the documentation for
this option to wimlib-imagex capture (1) for more details.

--threads=NUM_THREADS
Number of threads to use for compressing data. Default: autodetect (number of processors). This
parameter only has an effect when data recompression is requested.

--pipable
Rebuild the WIM so that it can be applied fully sequentially, including from a pipe. See wimlib-
imagex capture(1) for more details about creating pipable WIMs. By default, when neither --pipable
or --not-pipable is specified, the rebuilt WIM will be pipable if and only if it was already
pipable.

--not-pipable
Rebuild the WIM in the non-pipable format. (This is the default if WIMFILE is not pipable.)

--unsafe-compact
Compact the WIM file in-place, without using a temporary file. Existing resources are shifted down
to fill holes and new resources are appended as needed. The WIM file is truncated to its final
size, which may shrink the on-disk file. THIS OPERATION CANNOT BE SAFELY INTERRUPTED! If the
operation is interrupted, then the WIM file will be corrupted, and it may be impossible (or at
least very difficult) to recover any data from it. Users of this option are expected to know what
they are doing and assume responsibility for any data corruption that may result.

NOTES

       wimlib-imagex optimize does not support split WIMs.

       wimlib-imagex optimize is roughly equivalent to:

              wimlib-imagex export WIMFILE all tmp.wim && mv tmp.wim WIMFILE

EXAMPLES