7za - Online Linux Manual PageSection : 1
Updated : March 6th, 2016
Source : 7-Zip
NAME7za − A file archiver with high compression ratio format
SYNOPSIS7za <command> [<switches>... ] <archive_name> [<file_names>... ] [<@listfiles>... ]
DESCRIPTION7-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. 7za is a stand-alone executable. 7za handles fewer archive formats than 7z(1).
COMMANDSa 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 | 7za 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. 7za 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
DIAGNOSTICS7-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 limitationsDO 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 17za 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 27za a −sfx archive.exe dir1 add all files from directory "dir1" to SFX archive archive.exe (Remark : SFX archive MUST end with ".exe")
EXAMPLE 37za 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)
SEE ALSO7zr(1), 7z(1), p7zip(1), bzip2(1), gzip(1), zip(1),
HTML Documentation/usr/share/doc/p7zip-full/DOC/MANUAL/start.htm
AUTHORWritten for Debian by Mohammed Adnene Trojette. Updated by Robert Luberda. 0
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