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Oct 05, · 指定したファイルやフォルダを、復元できないように完全削除してくれるソフト。. 機密情報の書かれた極秘ファイル / フォルダ 等を、絶対に復元できないように完全抹消してくれます。. ドライブ内の未使用領域を完全に削除する機能や、スケジュール機能 なども付いています。. 利用できる抹消アルゴリズムは、Gutmann / US DoD M / Russian GOST Jan 19, · Folder Painter is an easy to use Portable Freeware program, which allows you to change the color of the icon representing a chosen folder to any color you like. 1. After Download Unzip it and run the run the appropriate exe file “FolderPainter_x86 or FolderPainter_xexe” you can choose an icon pack from left pane, 3 icon packages are available by default but You 7-Zip reads small data block at the beginning of file and tries to parse the header. It supports only some formats: WAV, PE, ELF, Mach-O. Then it can select filter that can increase compression ratio for that file. By default 7-Zip uses x86 filters (BCJ or BCJ2) for PE files (EXE, DLL). 7-Zip doesn’t use analysis in default (yx=5) mode
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Aug 18, · Default Folder X b3 | DownloadDefault Folder X b3Default Folder X attaches a toolbar to the right side of the Open and Save dialogs in Final Cut Pro x. Final Cut Pro December 15, Final Cut Pro x. Final Cut Pro November 14, Oct 05, · 指定したファイルやフォルダを、復元できないように完全削除してくれるソフト。. 機密情報の書かれた極秘ファイル / フォルダ 等を、絶対に復元できないように完全抹消してくれます。. ドライブ内の未使用領域を完全に削除する機能や、スケジュール機能 なども付いています。. 利用できる抹消アルゴリズムは、Gutmann / US DoD M / Russian GOST
Notes: “Default value” in switches descriptions means the value that will be used if switch is not specified. By default if cl and cu switches are not specified , 7-Zip uses UTF-8 encoding only for file names that contain symbols unsupported by local code page. It can be in the range from 3 to for Deflate Usually, a big number gives a little bit better compression ratio and a slower compression process.
A large fast bytes parameter can significantly increase the compression ratio for files which contain long identical sequences of bytes. Sets number of passes for Deflate encoder. It can be in the range from 1 to 15 for Deflate and from 1 to 10 for BZip2. Sets the Dictionary size for BZip2. You must specify the size in bytes, kilobytes, or megabytes. The maximum value for the Dictionary size is b. Sets the size of memory used for PPMd. The default value is 24 16MB. PPMd uses the same amount of memory for compression and decompression.
Sets multithread mode. If you have a multiprocessor or multicore system, you can get a speed increase with this switch. This option affects only compression with any method and decompression of BZip2 streams. Each thread in the multithread mode uses 32 MB of RAM for buffering. Sets the number of passes. It can be in the range from 1 to The default value is 1 for normal mode, 2 for maximum mode and 7 for ultra mode.
A bigger number can give a little bit better compression ratio and a slower compression process. If the level of analysis is smaller than 9, 7-Zip analyses only files that have some file name extensions: EXE, DLL, WAV. It supports only some formats: WAV, PE, ELF, Mach-O. Then it can select filter that can increase compression ratio for that file. By default 7-Zip uses x86 filters BCJ or BCJ2 for PE files EXE, DLL. Enables or disables solid mode.
In solid mode, files are grouped together. Usually, compressing in solid mode improves the compression ratio. Limitation of the solid block size usually decreases compression ratio but gives the following advantages:. Enables or disables sorting files by type in solid archives.
You can get big difference in compression ratio for different sorting methods, if dictionary size is smaller than total size of files. If there are similar files in different folders, the sorting “by type” can provide better compression ratio in some cases. Note that sorting “by type” has some drawbacks.
For example, NTFS volumes use sorting order “by name”, so if an archive uses another sorting, then the speed of some operations for files with unusual order can fall on HDD devices HDDs have low speed for “seek” operations. If “qs” mode provides much better compression ratio than default “qs-” mode, you still can increase compression ratio for “qs-” mode by increasing of dictionary size.
If you think that unusual file order is not problem for you, and if better compression ratio with small dictionary is more important for you, use “qs” mode. Note: There are some files for example, executable files , that are compressed with additional filter. Enables or disables compression filters. It uses BCJ2 filter in Ultra mode and BCJ filter in other modes. Enables or disables archive header compressing. If archive header compressing is enabled, the archive header will be compressed with LZMA method.
Binds output stream S1 in coder C1 with input stream S2 in coder C2. If stream number is not specified, stream with number 0 will be used. Usally coder has one input stream and one output stream. In 7z some coders can have multiple input and output streams. For example, BCJ2 encoder has one input stream and four output streams.
If you have a multiprocessor or multicore system, you can get a increase with this switch. LZMA compression uses only 2 threads. Sets compression method. You can use any number of methods. The default method is LZMA2. Numbers must begin from 0. Methods that have smaller numbers will be used before others. Filters increase the compression ratio for some types of files.
LZMA is an algorithm based on Lempel-Ziv algorithm. It provides very fast decompression about times faster than compression. Sets Dictionary size for LZMA.
The maximum value for dictionary size is MB, but bit version of 7-Zip allows to specify up to MB dictionary. For decompressing a file compressed by LZMA method with dictionary size N, you need about N bytes of memory RAM available.
Sets Match Finder for LZMA. Default method is bt4. Memory requirements depend on dictionary size parameter “d” in table below. Note: Your operation system also needs some amount of physical memory for internal purposes. So keep at least 32MB of physical memory unused. Sets number of fast bytes for LZMA. It can be in the range from 5 to The default value is 32 for normal mode and 64 for maximum and ultra modes.
Usually, a big number gives a little bit better compression ratio and slower compression process. Sets number of cycles passes for match finder. It can be in range from 0 to Sets the number of literal context bits high bits of previous literal.
It can be in range from 0 to 8. Default value is 3. Sets the number of literal pos bits low bits of current position for literals.
It can be in the range from 0 to 4. The default value is 0. Sets the number of pos bits low bits of current position. The default value is 2. LZMA2 uses: 1 thread for each chunk in x1 and x3 modes; and 2 threads for each chunk in x5, x7 and x9 modes. If LZMA2 is set to use only such number of threads required for one chunk, it doesn’t split stream to chunks.
So you can get different compression ratio for different number of threads. You can get the best compression ratio, when you use 1 or 2 threads. PPMd is a PPM-based algorithm. This algorithm is mostly based on Dmitry Shkarin’s PPMdH source code.
PPMd provides very good compression ratio for plain text files. There is no difference between compression speed and decompression speed. Memory requirements for compression and decompression also are the same. BCJ2 is a Branch converter for bit x86 executables version 2. It converts some branch instructions for increasing further compression. If LZMA is used, the size of the dictionary for streams s1 and s2 can be much smaller KB is enough for most cases than the dictionary size for stream s0.
Default section size is 64 MB. This parameter doesn’t affect memory consumption. Compression ratio is better, if the section size is equal or slightly larger than size of largest execution section in file. It’s possible to set delta offset in bytes. Default delta offset is 1. In solid mode, there is only one block per file or stream. If size of solid block is not specified, default value of solid block size will be calculated, that depends from “compression level” and “dictionary size”:.
Note: xz uses: 1 thread for each block in x1 and x3 modes; and 2 threads for each block in x5, x7 and x9 modes.
If xz is set to use only such number of threads required for one block, it doesn’t split stream to blocks.