SYNOPSIS
7za [adeltux] [-] [SWITCH] <ARCHIVE_NAME> <ARGUMENTS>...
DESCRIPTION
7-Zip is a file archiver with the highest compression ratio. The program supports 7z (that implements LZMA compression algorithm), 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.- 7za is a stand-alone executable. 7za handles less archive formats than 7z.
FUNCTION LETTERS
- a
- Add
- d
- Delete
- e
- Extract
- l
- List
- t
- Test
- u
- Update
- x
- eXtract with full paths
SWITCHES
- -ai[r[-|0]]{@listfile|!wildcard}
- Include archives
- -ax[r[-|0]]{@listfile|!wildcard}
- eXclude archives
- -bd
- Disable percentage indicator
- -i[r[-|0]]{@listfile|!wildcard}
- Include filenames
- -l
- don't store symlinks; store the files/directories they point to (CAUTION : the scanning stage can never end because of recursive symlinks like 'ln -s .. ldir')
- -m{Parameters}
- Set Compression Method (see /usr/share/doc/p7zip-full/DOCS/MANUAL/switches/method.htm for a list of methods)
- -mhe=on|off
- 7z format only : enables or disables archive header encryption (Default : off)
- -o{Directory}
- Set Output directory
- -p{Password}
- Set Password
- -r[-|0]
- Recurse subdirectories (CAUTION: this flag does not do what you think, avoid using it)
- -sfx[{name}]
- Create SFX archive
- -si
- Read data from StdIn (eg: tar cf - directory | 7za a -si directory.tar.7z)
- -so
- Write data to StdOut (eg: % echo foo | 7z a dummy -tgzip -si -so > /dev/null)
- -slt
- Sets technical mode for l (list) command
- -t{Type}
- Type of archive (7z, zip, gzip, bzip2 or tar. 7z format is default)
- -v{Size}[b|k|m|g]
- Create volumes
- -u[-][p#][q#][r#][x#][y#][z#][!newArchiveName]
- Update options
- -w[path]
- Set Working 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 :
- to backup a directory : tar cf - directory | 7za a -si directory.tar.7z
- to restore your backup : 7za x -so directory.tar.7z | tar xf -
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.
example : 7za a directory.7z directory
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")
EXAMPLE 1
- 7za a -t7z -m0=lzma -mx=9 -mfb=64 -md=32m -ms=on archive.7z dir1
- adds all files from directory "dir1" to archive archive.7z using "ultra settings"
- -t7z
- 7z archive
- -m0=lzma
- lzma method
- -mx=9
- level of compression = 9 (Ultra)
- -mfb=64
- number of fast bytes for LZMA = 64
- -md=32m
- dictionary size = 32 megabytes
- -ms=on
- solid archive = on
EXAMPLE 2
- 7za a -sfx archive.exe dir1
- add all files from directory "dir1" to SFX archive archive.exe (Remark : SFX archive MUST end with ".exe")
EXAMPLE 3
- 7za a -mhe=on -pmy_password archive.7z a_directory
- add all files from directory "a_directory" to the archive "archive.7z" (with data and header archive encryption on)
HTML Documentation
/usr/share/doc/p7zip-full/DOCS/MANUAL/index.htmAUTHOR
- Written for Debian by Mohammed Adnene Trojette.
-