Free Utility 7-Zip Compresses Files Efficiently | PCWorld
But send someone a .7Z file, and they may not know what to do with it–in fact, they may not even realize its a compressed file. Note that I call it a difference rather than a disadvantage: These days, many email providers (including Gmail) snoop into any ZIP file you send, and if it contains executable files, simply dont let you send it. Compress your executables using 7-Zip, and you can email them to anyone you like. 7-Zip doesnt always offer a superior compression ratio: When I tested it with a folder full of JPG files (which are already well-compressed), the resulting 7z archive was actually 78KB larger than a ZIP of the same folder produced by Windows Explorer. However, the archive was nearly 34MB in size, so a 78KB difference is negligible. When you first launch 7-Zip, its interface is simple and sparse: Just a list of files, along with six large toolbar buttons and a menu. No Wizards, welcome dialogs or any other pesky interruptions between you and your files. If youd like to give the interface a bit more oomph, hit F9 and 7-Zip will be transformed into a http://7-zipdownload.us basic dual-pane file manager. You can even save up to ten folders as Favorites if you use it often for traversing your file system. All in all, 7-Zips user interface will probably not blow you away.
Original article here: http://www.pcworld.com/article/232451/7zip_64bit_version.html
Unix tip: 7-Zip to the rescue | ITworld
But send someone a .7Z file, and they may not know what to do with it–in fact, they may not even realize its a compressed file. Note that I call it a difference rather than a disadvantage: These days, many email providers (including Gmail) snoop into any ZIP file you send, and if it contains executable files, simply dont let you send it. Compress your executables using 7-Zip, and you can email them to anyone you like. 7-Zip doesnt always offer a superior compression ratio: When I tested it with a folder full of JPG files (which are already well-compressed), the resulting 7z archive was actually 78KB larger than a ZIP of the same folder produced by Windows Explorer. However, the archive was nearly 34MB in size, so a 78KB difference is negligible. When you first launch 7-Zip, its interface is simple and sparse: Just a list of files, along with six large toolbar buttons and a menu. No Wizards, welcome dialogs or any other pesky interruptions between you and your files. If youd like to give the interface a bit more oomph, hit F9 and 7-Zip will be transformed into a basic dual-pane file manager. You can even save up to ten folders as Favorites if you use it often for traversing your file system.
Original article here: http://www.pcworld.com/article/237134/free_utility_7_zip_compresses_files_efficiently.html
It also offers AES-256 encryption for 7z and ZIP formats should you need it. 7-Zip works in Windows 98, ME, NT, 200, XP (I use XP Professional) and Vista. It was a 2007 winner in the SourceForge.net Community Choice Awards for both Best Project and Best Technical Design. I found it to be both quick and reliable. It also has localizations for 74 languages. 7-Zip also works on the command line. If you like working in a DOS Command Prompt, you can get a list of the tool’s options by simply typing its name. That output is shown below. C:\Program Files\7-Zip>7z 7-Zip 4.57 Copyright (c) 1999-2007 Igor Pavlov 2007-12-06 Usage: 7z […] […] [] a: Add files to archive b: Benchmark d: Delete files from archive e: Extract files from archive (without using directory names) l: List contents of archive t: Test integrity of archive u: Update files to archive x: eXtract files with full paths -ai[r[-|0]]{@listfile|!wildcard}: Include archives -ax[r[-|0]]{@listfile|!wildcard}: eXclude archives -bd: Disable percentage indicator -i[r[-|0]]{@listfile|!wildcard}: Include filenames -m{Parameters}: set compression Method -o{Directory}: set Output directory -p{Password}: set Password -r[-|0]: Recurse subdirectories -scs{UTF-8 | WIN | DOS}: set charset for list files -sfx[{name}]: Create SFX archive -si[{name}]: read data from stdin -slt: show technical information for l (List) command -so: write data to stdout -ssc[-]: set sensitive case mode -ssw: compress shared files -t{Type}: Set type of archive -v{Size}[b|k|m|g]: Create volumes -u[-][p#][q#][r#][x#][y#][z#][!newArchiveName]: Update options -w[{path}]: assign Work directory. Empty path means a temporary directory -x[r[-|0]]]{@listfile|!wildcard}: eXclude filenames -y: assume Yes on all queries You can download 7-Zip from http://www.7-zip.org/ .
Original article here: http://www.itworld.com/personal-tech/59945/7-zip-rescue
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