SYNOPSIS7zr [adeltux] [-] [SWITCH] <ARCHIVE_NAME> <ARGUMENTS>...
DESCRIPTION7-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.
- 7zr is a stand-alone executable. 7zr handles less archive formats than 7z. 7zr is a "light-version" of 7za that only handles 7z archives.
- eXtract with full paths
- Include archives
- eXclude archives
- Disable percentage indicator
- Include filenames
- 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')
- Set Compression Method (see /usr/share/doc/p7zip/DOCS/MANUAL/switches/method.htm for a list of methods)
- 7z format only : enables or disables archive header encryption (Default : off)
- Set Output directory
- Set Password
- Recurse subdirectories (CAUTION: this flag does not do what you think, avoid using it)
- Create SFX archive
- Read data from StdIn (eg: tar cf - directory | 7zr a -si directory.tar.7z)
- Write data to StdOut (eg: 7zr x -so directory.tar.7z | tar xf -)
- Sets technical mode for l (list) command
- Create volumes
- Update options
- Set Working directory
- Exclude filenames
- Assume Yes on all queries
DIAGNOSTICS7-Zip returns the following exit codes:
- Normal (no errors or warnings detected)
- Warning (Non fatal error(s)). For example, some files cannot be read during compressing. So they were not compressed
- Fatal error
- Bad command line parameters
- Not enough memory for operation
- 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 | 7zr a -si directory.tar.7z
- to restore your backup : 7zr 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 : 7zr 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")
- 7zr 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"
- 7z archive
- lzma method
- level of compression = 9 (Ultra)
- number of fast bytes for LZMA = 64
- dictionary size = 32 megabytes
- solid archive = on
- 7zr a -sfx archive.exe dir1 add all files from directory "dir1" to SFX archive archive.exe (Remark : SFX archive MUST end with ".exe")
- 7zr 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)
- Written for Debian by Mohammed Adnene Trojette.