u (Update) command
Update older files in the archive and add files that are not already in the archive.
Note: the updating of solid .7z archives can be slow, since it can require some recompression.
Example
7z u archive.zip *.doc
updates *.doc files to archive archive.zip.
Notes
7-Zip doesn't use the system wildcard parser. 7-Zip doesn't follow the archaic rule by which *.* means any file. 7-Zip treats *.* as matching the name of any file that has an extension. To process all files, you must use a * wildcard.
Switches that can be used with this command
-i (Include)
-m (Method)
-p (Set Password)
-r (Recurse)
-sfx (create SFX)
-si (use StdIn)
-so (use StdOut)
-sni (Store NT security information)
-sns (Store NTFS alternate Streams)
-ssw (Compress shared files)
-spf (Use fully qualified file paths)
-stl (Set archive timestamp from the most recently modified file)
-t (Type of archive)
-u (Update)
-w (Working Dir)
-x (Exclude)
See also
Commands: a (Add), d (Delete),
Switches: -u (Update)
Other documents on this site:
- 7-Zip Manual /lzma.txt
- 7-Zip Manual /src-history.txt
- 7-Zip Manual /readme.txt
- 7-Zip Manual /7zC.txt
- 7-Zip Manual /License.txt
- 7-Zip Manual /copying.txt
- 7-Zip Manual /Methods.txt
- 7-Zip Manual /unRarLicense.txt
- 7-Zip Manual /7zFormat.txt
- 7-Zip Start Page
- Command Line Syntax
- Command Line Version User's Guide
- Exit Codes from 7-Zip
- -ax (Exclude archive filenames) switch
- -y (assume Yes on all queries) switch
- -sa (set Archive name mode) switch
- -slp (Set Large Pages mode) switch
- -p (set Password) switch
- -stl (Set archive timestamp from the most recently modified file) switch
- -sfx (Create SFX archive) switch
- -ssc (Set Sensitive Case mode) switch
- -scrc (Set hash function) switch
- -ai (Include archive filenames) switch
- -o (set Output directory) switch
- -si (read data from stdin) switch
- -r (Recurse subdirectories) switch
- -ssw (Compress files open for writing) switch
- -w (set Working directory) switch
- -so (write data to stdout) switch
- -i (Include filenames) switch
- -t (set Type of archive) switch
- -stx (Exclude archive type) switch
- -spf (Use fully qualified file paths) switch
- Command Line Switches
- -scc (Set charset for console input/output) switch
- -sdel (Delete files after including to archive) switch
- -m (Set compression Method) switch
- -slt (Show technical information) switch
- -u (Update options) switch
- -ao (Overwrite mode) switch
- -x (Exclude filenames) switch
- -v (Create Volumes) switch
- -scs (Set charset for list files) switch
- -an (Disable parsing of archive_name) switch
- -bb (Set output log level) switch
- -spf (Use fully qualified file paths) switch
- -sns (Store NTFS alternate Streams) switch
- -- (Stop switches parsing) switch
- -sni (Store NT security information) switch
- d (Delete) command
- x (Extract with full paths) command
- a (Add) command
- b (Benchmark) command
- e (Extract) command
- rn (Rename) command
- Command Line Commands
- h (Hash) command
- u (Update) command
- t (Test integrity of archive) command
- l (List contents of archive) command
- Menu Items and Shortcut Keys
- 7-Zip File Manager
- Options Dialog Box
- About Dialog Box
- Benchmark
- Plugins
- Add to Archive Dialog Box
- Extract Dialog Box
- 7-Zip Plugin
- Thanks
- License for use and distribution
- General Information
- Frequently Asked Questions (FAQ)
- Supported formats
- Performance
- 7z Format