7z [Args] [archive.7z] [files / folders to archive]
A file archiver with highest compression ratio
Args:
a add
d delete
e extract
l list
t test
u update
x extract with full paths
DO NOT USE the 7-zip format for backup purpose on Linux/Unix.
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 | 7z a -si directory.tar.7z
- to restore your backup : 7z 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.
Quick and Easy - Add all files in dir1 to archive.7z with Default Settings.
7z a archive.7z dir1
Create a 7zip archive on Compression Level Ultra (-mx9
) and split it into 4GB sized volumes (-v4g
)
7zz a -mx9 -v4g archive.7z dir1
Add all files in dir1 to archive.7z with Max Compression
7z a -t7z -m0=lzma -mx=9 -mfb=64 -md=32m -ms=on archive.7z dir1
-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 Mb
-ms=on solid archive = on
Add (store) all files in dir1 to archive.7z with No Compression
7z a -m0=copy archive.7z dir1
0 normal (no errors or warnings)
1 warning (non-fatal errors)
2 fatal error
7 bad cli arguments
8 not enough memory for operation
255 process was interrupted