| @@ -1,22 +1,25 @@ | | | @@ -1,22 +1,25 @@ |
1 | LZMA is a general purporse compression algorithm designed by Igor | | 1 | LZMA is a general purporse compression algorithm designed by Igor |
2 | Pavlov as part of 7-Zip. It provides high compression ratio while | | 2 | Pavlov as part of 7-Zip. It provides high compression ratio while |
3 | keeping the decompression speed fast. | | 3 | keeping the decompression speed fast. |
4 | | | 4 | |
5 | XZ Utils are an attempt to make LZMA compression easy to use on | | 5 | XZ Utils are an attempt to make LZMA compression easy to use on |
6 | free (as in freedom) operating systems. This is achieved by providing | | 6 | free (as in freedom) operating systems. This is achieved by providing |
7 | tools and libraries which are similar to use than the equivalents | | 7 | tools and libraries which are similar to use than the equivalents |
8 | of the most popular existing compression algorithms. | | 8 | of the most popular existing compression algorithms. |
9 | | | 9 | |
10 | XZ Utils consist of a few relatively separate parts: | | 10 | XZ Utils consist of a few relatively separate parts: |
11 | * liblzma is an encoder/decoder library with support for several | | 11 | * liblzma is an encoder/decoder library with support for several |
12 | filters (algorithm implementations). The primary filter is | | 12 | filters (algorithm implementations). The primary filter is |
13 | LZMA. | | 13 | LZMA. |
14 | * libzfile (or whatever the name will be) enables reading from | | 14 | * libzfile (or whatever the name will be) enables reading from |
15 | and writing to gzip, bzip2 and LZMA compressed and uncompressed | | 15 | and writing to gzip, bzip2 and LZMA compressed and uncompressed |
16 | files with an API similar to the standard ANSI-C file I/O. | | 16 | files with an API similar to the standard ANSI-C file I/O. |
17 | [ NOTE: libzfile is not implemented yet. ] | | 17 | [ NOTE: libzfile is not implemented yet. ] |
18 | * xz command line tool has almost identical syntax than gzip | | 18 | * xz command line tool has almost identical syntax than gzip |
19 | and bzip2. It makes LZMA easy for average users, but also | | 19 | and bzip2. It makes LZMA easy for average users, but also |
20 | provides advanced options to finetune the compression settings. | | 20 | provides advanced options to finetune the compression settings. |
21 | * A few shell scripts make diffing and grepping LZMA compressed | | 21 | * A few shell scripts make diffing and grepping LZMA compressed |
22 | files easy. The scripts were adapted from gzip and bzip2. | | 22 | files easy. The scripts were adapted from gzip and bzip2. |
| | | 23 | |
| | | 24 | Due to backdoor in 5.6.*, this package is currently called 5.6* but |
| | | 25 | contains 5.4.*. |