7z (1) - Linux Manuals
7z: A file archiver with high compression ratio format
NAME
7z - A file archiver with high compression ratio format
SYNOPSIS
7z <command> [<switches>... ] <archive_name> [<file_names>... ] [<@listfiles>... ]DESCRIPTION
7-Zip is a file archiver supporting 7z (that implements LZMA compression algorithm featuring very high compression ratio), LZMA2, XZ, ZIP, Zip64, CAB, RAR (if the non-free p7zip-rar package is installed), ARJ, GZIP, BZIP2, TAR, CPIO, RPM, ISO, most filesystem images and DEB formats. Compression ratio in the new 7z format is 30-50% better than ratio in ZIP format.7z uses plugins to handle archives, so it might be slightly slower than 7za(1) but can handle more archive formats.
COMMANDS
- a
- Add files to archive
- b
- Benchmark
- d
- Delete files from archive
- e
- Extract files from archive (without using directory names)
- h
- Calculate hash values for files
- i
- Show information about supported formats
- l
- List contents of archive
- rn
- Rename files in archive
- t
- Test integrity of archive
- u
- Update files to archive
- x
- eXtract files with full paths
SWITCHES
- --
- Stop switches parsing
- -ai[r[-|0]]{@listfile|!wildcard}
- Include archives
- -ax[r[-|0]]{@listfile|!wildcard}
- Exclude archives
- -ao{a|s|t|u}
- Set Overwrite mode
- -an
- Disable archive_name field
- -bb[0-3]
- Set output log level
- -bd
- Disable progress indicator
- -bs{o|e|p}{0|1|2}
- Set output stream for output/error/progress line
- -bt
- Show execution time statistics
- -i[r[-|0]]{@listfile|!wildcard}
- Include filenames
- -m{Parameters}
- Set Compression Method (see /usr/share/doc/p7zip/DOC/MANUAL/cmdline/switches/method.htm from the p7zip-full package for a list of methods)
- -o{Directory}
- Set Output directory
- -p{Password}
- Set Password (NOTE: this flag does not work with 7zr)
- -r[-|0]
- Recurse subdirectories (CAUTION: this flag does not do what you think, avoid using it)
- -sa{a|e|s}
- Set archive name mode
- -scc{UTF-8|WIN|DOS}
- Set charset for for console input/output
- -scs{UTF-8|UTF-16LE|UTF-16BE|WIN|DOS|{id}}
- Set charset for list files
- -scrc[CRC32|CRC64|SHA1|SHA256|*]
- Set hash function for x, e, h commands
- -sdel
- Delete files after compression
- -seml[.]
- Send archive by email
- -sfx[{name}]
- Create SFX archive
- -si[{name}]
- Read data from stdin (e.g. tar cf - directory | 7z a -si directory.tar.7z)
- -slp
- Set Large Pages mode
- -slt
- Show technical information for l (List) command
- -snh
- Store hard links as links
- -snl
- Store symbolic links as links
- -sni
- Store NT security information
- -sns[-]
- Store NTFS alternate streams
- -sfx[{name}]
- Create SFX archive
- -so
- Write data to stdout (e.g. 7z x -so directory.tar.7z | tar xf -)
- -spd
- Disable wildcard matching for file names
- -spe
- Eliminate duplication of root folder for extract command
- -spf
- Use fully qualified file paths
- -ssc[-]
- Set sensitive case mode
- -ssw
- Compress shared files
- -stl
- Set archive timestamp from the most recently modified file
- -stm{HexMask}
- Set CPU thread affinity mask (hexadecimal number)
- -stx{Type}
- Exclude archive type
- -t{Type}
- Set type of archive
- -u[-][p#][q#][r#][x#][y#][z#][!newArchiveName]
- Update options
- -v{Size}[b|k|m|g]
- Create volumes
- -w[path]
- Set working directory. Empty path means a temporary directory
- -x[r[-|0]]]{@listfile|!wildcard}
- Exclude filenames
- -y
- Assume Yes on all queries
DIAGNOSTICS
7-Zip returns the following exit codes:-
- 0
- Normal (no errors or warnings detected)
- 1
- Warning (Non fatal error(s)). For example, some files cannot be read during compressing, so they were not compressed
- 2
- Fatal error
- 7
- Bad command line parameters
- 8
- Not enough memory for operation
- 255
- User stopped the process with control-C (or similar)
Backup and limitations
DO NOT USE the 7-zip format for backup purpose on Linux/Unix because :- 7-zip does not store the owner/group of the file.
On Linux/Unix, in order to backup directories you must use tar :
If you want to send files and directories (not the owner of file)
to others Unix/MacOS/Windows users, you can use the 7-zip format.
Do not use "-r" because this flag does not do what you think.
Do not use directory/* because of ".*" files (example : "directory/*" does not match "directory/.profile")
- to backup a directory
- to restore your backup : 7z x -so directory.tar.7z | tar xf -
EXAMPLE 1
EXAMPLE 2
EXAMPLE 3
HTML Documentation
/usr/share/doc/p7zip-full/DOC/MANUAL/start.htm
AUTHOR