General :: Windows - Program Which Uses LZW Compression
Oct 4, 2010
how to do Lempel-Ziv-Welch compression using pen and paper for my algorithms and data structures class. Unfortunately we have only a couple of examples in our book of how it is done. I'd like to practice compressing and decompressing text using it, but I need to find a way to check if I'm right doing it right or wrong.
So I'm looking for some preferably free/open source program which can compress and decompress LZW for Windows or GNU/Linux. Programs without binary distributions are fine too.
I sometimes get confused by the varying command line options I need to run common Unix archiving and compression software (e.g. gzip, bzip2, zip, tar).
Is there a program out there that can just Do What I Mean for common cases? For example:
I have a script which periodically backs up a directory using the command "tar -czvf [name] [directory]" but my problem is that the script has recently been putting a lot of stress on the server (Minecraft SMP) and tends to lag players as it backs up, which recently has been taking nearly 5 minutes.So I need to know if there's a way to control the GZip compression rate at the same time that it archives and backs up the files?I understand that I can first tar the files and then GZip them separately with a different compression rate afterwards, but this would not work because it names the files with the current server time, which sometimes changes in between commands.
I am trying to install a PCIe card for data compression in Linux ubuntu 9.10(karmic Koala). As you can see in the following code although I have the root access I can not get permission to install the device driver.As I have the root access I suppose to get access to install the driver. I checked around and got the procedure from a web siteEnabling root access in unbuntuBasically in almost all linux machines we will be havingroot access for login.but in ubuntu by default that option was not enabled.If u want to have root login in ubuntu then u have to do some changes in ur Ubuntu machinesSteps to follow1.First enter into ubuntu as your user login.2.Then open the terminal and type the command sudo -s,it will ask for root access and type the password.3.Then type passwd root it will ask for new password4.Open terminal and go to the path /etc/gdm/5.Open gdm.conf6.search for AllowRoot=false7.and then change AllowRoot=true8.now restart ur machine9.now u can enjoy with root accessThe funny part is when I search for the file which is gdm.conf in the prescribed location, I can not find it.
Code: root@faisal-desktop:/home/faisal/Desktop# cd AHA/ root@faisal-desktop:/home/faisal/Desktop/AHA# ls
I have an application which is separated to several parts (processes) communicating over TCP/IP, using a pre-defined port on localhost.Is this always safe? Can some kind of a firewall (corporate, locally installed, Windows firewall, etc) block this traffic? Or can some user settings in the OS that can block this traffic?The OSes I'm interested in are Windows (XP through 7) and Linux (Ubuntu, RHEL, SUSE)
I have Linpus runnig on my Aspire One. I would like to setup an icon on the menu to start a windows program using wine. I can start it manually and it works fine. I want to be able to access it directly from the desktop.
I'm currently trying to get a windows compiled program to work through Wine to run on Linux and MacOSX.
When I run the program through wine, it prompts me to install Gecko which I do. Later on in the program, it attempts to use MSHTML to render HTML but I get these error messages on my console instead.
err:mshtml:init_xpcom NS_InitXPCOM2 failed: 80004005 err:mshtml:HTMLDocument_Create Failed to init Gecko, returning CLASS_E_CLASSNOTAVAILABLE fixme:ole:CoCreateInstance no instance created for interface {00000000-0000-0000-c000-000000000046} of class {25336920-03f9-11cf-8fd0-00aa00686f13}, hres is 0x80040111
I'm using Wine 1.1.34 and a similar bug was supposedly fixed in 1.1.33 [URL]
I'm using a crypt solution called DriveCrypt(for windows). But now I need a solution that does the same that DriveCrypt does but must to work in both Windows and Linux.Somebody know some software that works in Linux and Windows to encrypt folders?
I know the subject title makes it seem like this should be something on the Slackware forums but I think it can be generalized to other 64-bit Linux operating systems which is why I ask here. I'm running Slackware 13.37 64-bit and was wondering if I use Wine to run a Windows program (with multilib files), would it still run as if it had been used on a 64-bit computer?
I am wondering if anyone knows how to enable NTFS compression using Paragon NTFS 8.1 Enterprise?
The Professional version comes with a utility mkntfs which allows you to set compression as default for all files, but the Enterprise version is apparently meant to be 'fully featured' and support compression, so how do I enable compression on a drive/folder/file?
You right click on a file and choose Compress. How do you select the compression level for algorithms that support different levels? If you can't, what compression level does it use?
I have just installed Free Arc utility for compression from : [URL] and it works smoothly but in command Line mode.
Commands: a add files to archive c add comment to archive ch modify archive (recompress, encrypt and so on) create create new archive cw write archive comment to file d delete files from archive e extract files from archive ignoring pathnames f freshen archive j join archives k lock archive l list files in archive lb bare list of files in archive lt technical archive listing m move files and dirs to archive mf move files to archive r recover archive using recovery record rr add recovery record to archive s convert archive to SFX t test archive integrity u update files in archive v verbosely list files in archive x extract files from archive
Options: -- stop processing options -ad --adddir add arcname to extraction path -aeALGORITHM --encryption=ALGORITHM encryption ALGORITHM (aes, blowfish, serpent, twofish) -agFMT --autogenerate=FMT autogenerate archive name with FMT -apDIR --arcpath=DIR base DIR in archive -baMODE --BrokenArchive=MODE deal with badly broken archive using MODE -cfgFILE --config=FILE use config FILE (default: arc.ini) -d --delete delete files & dirs after successful archiving -df --delfiles delete only files after successful archiving -diAMOUNT --display=AMOUNT control AMOUNT of information displayed: [hoacmnwrfdtske]* -dmMETHOD --dirmethod=METHOD compression METHOD for archive directory -dpDIR --diskpath=DIR base DIR on disk -dsORDER --sort=ORDER sort files in ORDER -ed --nodirs don't add empty dirs to archive -envVAR read default options from environment VAR (default: FREEARC) -epMODE --ExcludePath=MODE Exclude/expand path MODE -f --freshen freshen files -fn --fullnames match with full names -hpPASSWORD --HeadersPassword=PASSWORD encrypt/decrypt archive headers and data using PASSWORD -iTYPE --indicator=TYPE select progress indicator TYPE (0/1/2) -ioff --shutdown shutdown computer when operation completed -k --lock lock archive -kb --keepbroken keep broken extracted files -kfKEYFILE --keyfile=KEYFILE encrypt/decrypt using KEYFILE -lcN --LimitCompMem=N limit memory usage for compression to N mbytes -ldN --LimitDecompMem=N limit memory usage for decompression to N mbytes -mMETHOD --method=METHOD compression METHOD (-m0..-m9, -m1x..-m9x) -maLEVEL set filetype detection LEVEL (+/-/1..9) -max maximum compression using external precomp, ecm, .....
Is there any compression software that supports PAQ8 and its variants with a graphical interface for Fedora (i'm using x86_64)? What's the best compression algorithm known to man? Time taken to compress is not a problem, just need to have the best compression available. Is there any program for linux?
hy I can't make a 7z archive with file roller? I have already installed p7zip, p7zip-plugins, and 7za. I don't understand what the problem is. I can make a 7z archive from the command line with no problems. I keep getting this message but it doesn't tell me what the error is. Quote:An error occurred while adding files to the archive.
I notice in Nautilus file manager, if I right click on a directory, I can 'compress' that file or directory. clicking this provides options for different compression formats, but how do I know which one to use?Most of my files are data files, ie text. Though I do have photo/image folders and a music folde
i have about 22 gb of music (mp3 & ogg) on my laptop harddrive.i also have an unused sony mp3 player with a 20 gb hard drive.what i want to do is back up the 22gb into a 20 gb space the music does not need to be playable on the sony player...just using it as a back up device.ok...2 issues:1. when i've tried compressing (tar.gz) mp3 files, little to no space is saved, i assume that a mp3 is pretty compressed already.is there another way to compress effectively ? i dont want to reduce bit rates of the individual music tracks.2. i formatted the sony hd using ext4, but this leaves me with only 16 gb usable space. tried fat32 and this left me with about 18gb.
I�m installing fail2ban to improve the security of a home asterisk server which from time to time becomes the target of some sip account cracker and/or ssh brute force attack.For those not familiar with fail2ban, this utility monitors log files to find matches with user specified expressions to identify the presence of a brute force attack. Then configures iptables rules to block the offending IP.Here�s an example:
Code: NOTICE[1734] chan_sip.c: Registration from '"613"<sip:613@xx.xxxx.xxx.xxx>' failed for 'yyy.yyy.yyyy.yyy' - No matching peer found
I haven't seen this addressed anywhere & quite frankly a "google" wasn't any help. So I pose the question here. If I, under M$, turn on the NTFS compression, will that drive still work under LINUX? My thought is that it won't as I haven't seen any control in LINUX for it.
I use mplayer to play my media files. Occasionally I want to take screenshots of media I am playing. I use the -vf screenshot option to take screenshots which generates shotxxxx.png. The issue is that all those png are not compressed and usually large. When dealing with Hi-Def media they are extremely large, each is 4-5 MB in size at the least. Is there a way I can set the option for compression of png images. If I use imagemagick the same files get compressed to like 1.5MB of png file.
I am working on a project where I am dialing out of a modem!! Old stuff, ya, but the modem allows my device send info from remote sites from my datibase through a phone line so that this IT departments dont have to worry my device being a security issue on their networks.
Any way, the modem I'm using isn't incredibly well designed, and when a certain ascii char is read by the modem, it reads it as an EOF indicator. It is also important that the files I send are compressed.
My question is: Does anyone know of a compression format that allows ME to dissallow IT's use of certain ascii chars?
just as an illustration:
Device --------> Modem ---------> Off-site
and the Modem stops talking to the device when a certain char is passed to it.
some reason it seems like the lowest it goes is ~64kbps (~ implying variable bitrate).So yeah, any thing that'll let me do the compression limbo better? (How low can you go? ) A different program? Unlock bonus stage? What
I have printer whhich work perfectly on ubuntu desktop I shared it into network and trying to print from Mac and I'm getting the following error: "SpliX Compression algorithm 0x0 does not exist" Printer - Samsung SCX-4200
I compressed a directory containing many image files. The directory amounted to 5.3gig. Compressed with TAR using .tgz the compression took a couple minutes at most and compressed down to 4.3 gig. Compressed using .bz2 the compression took about 90 minutes and compressed down to 4.2 gig. Hardly worth the extra time. Do these numbers look normal to you?
