------------- Original Message --------------
Aseem <aseem(a)ports.cmc.net.in> wrote:
On Fri, 29 Jun 2001, N. Shrikant wrote:
> Are *.gz files really compressed into smaller sizes?
try yourself. on linux note the file size before
compression. and then then compress it with gzip, bzip2,
winzip. and you will find that all these utilities do
compress the files.
compression you get depends on file format.
i found that gzip compresses more for text files while
bzip2 was good for binary file compression. i found both
gzip and bzip2 better than winzip when it comes to maximum
amount of compression.
---------------------- End ---------------
Yep, you are right, compression results do depend
on the file format. Compression basically reduces
redundancies in data. Some file formats are
already in compressed form. Like JPEG, MP3 etc.
An MP3 file is just a compressed WAV file. So
compressing these file formats won't give you
very high compression ratio, since most of the
redundancies have already been eliminated.
Try saving a (fairly large) BMP as a JPEG
file. Notice the reduction in size, which is
a result of compression.
If, interested in compression techniques, you'll
find loads of reading material on the Net. If you
know someone from the engineering fraternity, try
getting hold of books like 'Computer Networks' by
Tanenbaum, or 'Principles of Comm. Systems' by
Taub & Schilling. Look for Information Theory in
the latter. These are the books I came accross.
There are many more.
Regards,
Nikhil.
____________________________________________________
Buy Feng Shui Package for Rs. 151/- only, at http://shopping.rediff.com/shopping/fengshui_mailer.htm
------------- Original Message --------------
Aseem <aseem(a)ports.cmc.net.in> wrote:
On Fri, 29 Jun 2001, N. Shrikant wrote:
> Are *.gz files really compressed into smaller sizes?
try yourself. on linux note the file size before
compression. and then then compress it with gzip, bzip2,
winzip. and you will find that all these utilities do
compress the files.
compression you get depends on file format.
i found that gzip compresses more for text files while
bzip2 was good for binary file compression. i found both
gzip and bzip2 better than winzip when it comes to maximum
amount of compression.
-------------------- End ------------------
Yep, you are right, compression results depend
on the file format. Compression basically reduces
redundancies in data. Some file formats are
already in compressed form. Like JPEG, MP3 etc.
An MP3 file is just a compressed WAV file. So
compressing these file formats won't give you
very high compression ratio, since most of the
redundancies have already been eliminated.
Try saving a (fairly large) BMP as a JPEG
file. Notice the reduction in size, which is
a result of compression.
If, interested in compression techniques, you'll
find loads of reading material on the Net. If you
know someone from the engineering fraternity, try
getting hold of books like 'Computer Networks' by
Tanenbaum, or 'Principles of Comm. Systems' by
Taub & Schilling. Look for Information Theory in
the latter. These are the books I came accross.
There are many more.
Regards,
Nikhil.
____________________________________________________
Buy Feng Shui Package for Rs. 151/- only, at http://shopping.rediff.com/shopping/fengshui_mailer.htm
------------- Original Message --------------
Aseem <aseem(a)ports.cmc.net.in> wrote:
On Fri, 29 Jun 2001, N. Shrikant wrote:
> Are *.gz files really compressed into smaller sizes?
try yourself. on linux note the file size before
compression. and then then compress it with gzip, bzip2,
winzip. and you will find that all these utilities do
compress the files.
compression you get depends on file format.
i found that gzip compresses more for text files while
bzip2 was good for binary file compression. i found both
gzip and bzip2 better than winzip when it comes to maximum
amount of compression.
-------------------- End ------------------
Yep, you are right, compression results depend
on the file format. Compression basically reduces
redundancies in data. Some file formats are
already in compressed form. Like JPEG, MP3 etc.
An MP3 file is just a compressed WAV file. So
compressing these file formats won't give you
very high compression ratio, since most of the
redundancies have already been eliminated.
Try saving a (fairly large) BMP as a JPEG
file. Notice the reduction in size, which is
a result of compression.
If, interested in compression techniques, you'll
find loads of reading material on the Net. If you
know someone from the engineering fraternity, try
getting hold of books like 'Computer Networks' by
Tanenbaum, or 'Principles of Comm. Systems' by
Taub & Schilling. Look for Information Theory in
the latter. These are the books I came accross.
There are many more.
Regards,
Nikhil.
____________________________________________________
Buy Feng Shui Package for Rs. 151/- only, at http://shopping.rediff.com/shopping/fengshui_mailer.htm
------------- Original Message --------------
Aseem <aseem(a)ports.cmc.net.in> wrote:
On Fri, 29 Jun 2001, N. Shrikant wrote:
> Are *.gz files really compressed into smaller sizes?
try yourself. on linux note the file size before
compression. and then then compress it with gzip, bzip2,
winzip. and you will find that all these utilities do
compress the files.
compression you get depends on file format.
i found that gzip compresses more for text files while
bzip2 was good for binary file compression. i found both
gzip and bzip2 better than winzip when it comes to maximum
amount of compression.
-------------------- End ------------------
Yep, you are right, compression results depend
on the file format. Compression basically reduces
redundancies in data. Some file formats are
already in compressed form. Like JPEG, MP3 etc.
An MP3 file is just a compressed WAV file. So
compressing these file formats won't give you
very high compression ratio, since most of the
redundancies have already been eliminated.
Try saving a (fairly large) BMP as a JPEG
file. Notice the reduction in size, which is
a result of compression.
If, interested in compression techniques, you'll
find loads of reading material on the Net. If you
know someone from the engineering fraternity, try
getting hold of books like 'Computer Networks' by
Tanenbaum, or 'Principles of Comm. Systems' by
Taub & Schilling. Look for Information Theory in
the latter. These are the books I came accross.
There are many more.
Regards,
Nikhil.
____________________________________________________
Buy Feng Shui Package for Rs. 151/- only, at http://shopping.rediff.com/shopping/fengshui_mailer.htm
hi all,
there is an observation with regards to KDE manager (i am not sure if
others behave similarly). if you put the machine in screen saver mode
(password protected ) and press ctl+alt+bs then xwin gets killed (actually
it should not because autherization is not confirmed) and gives open
access to the account! (even if it was logging the user out it would have
been fine).
is there anyway to stop this?
ulhas
------------- Original Message --------------
Philip S Tellis <philip.tellis(a)iname.com> wrote:
Your line length's too long man.
------------------ End ----------------------
I thought I'd include this in my previous mail,
but didn't. Should have.
I wrote to Rediffmail about fixing the
line length to about 72, or providing an option
to do so in the preferences. The first time
'round they misunderstood "length" for *size*
of the mail. I wrote again, making things very
clear. That mail got no reply, and its been
almost a month now, so I'm guessing they don't
want to reply.
I know there's atleast one person on this list
who's from Rediff. Can he do something? Mr. RM?
Anyway, till then, I'm going to be doing it
manually. Carriage returns :)
Regards,
Nikhil.
____________________________________________________
Buy Feng Shui Package for Rs. 151/- only, at http://shopping.rediff.com/shopping/fengshui_mailer.htm
Dear Linuxers,
I have recently burnt cds for solaris....
has anybody used solaris 8 (intel)...
i am facing problems in installatio can somebody
provide me a link to some docs on installation of
solaris 8.
regards
lilo
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Are *.gz files really compressed into smaller sizes? Because when I
open a gzipped file using WinZip, the compression ratio always reads
0%, and after extracting the conctents of a gzipped file and adding up
the file sizes, it totals the size of the *.gz file. So where's the
compression? Also, which one can give the maximum compression, gzip or
bzip?
- Shrikant
p.s:- is it my imagination, or are duels getting rather prolix?
Hi,
Thanx guys, for all the support and encouragement. I had another linux
installation at home and tried compiling it at home with a new kernel 2.4.4,
which i dowloaded from kernel.org I managed compiling it and also booting
into it. However before i got too excited, i found that i set my eth0 wrong.
I tried to linuxconf and netconf and both gave me pipe broken error. Do i
have to recompile and if i do what do i have to take care?
About the upmteen problems that i faced in my office installation I think i
will reinstall RHL 6.2 once again and then try to compile to the new
version. The basic problem I had was gcc/cc was not installed and therefore
i could not compile. Will try installing an older version of gcc.
Noel.
_________________________________________________________________________
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Hi Luggers,
It all started after I started to upgrade my kernel from 2.2 to 2.4.2 as
philip suggested, i untarred the 2.4.1 kernel but was unable to add the
patch. While applying the 2.4.2 patch, it gave me an error :
patch unexpectedly ends in middle of line
unexpected end of line in patch.
I continued to make menuconfig. and got the following error:
rm -f include/asm
( cd include ; ln -sf asm-i386 asm)
make -C scripts/lxdialog all
make[1]: Entering directory `/usr/src/linux-2.4.1/scripts/lxdialog'
>>Unable to find the Ncurses libraries.
>>
>>You must have Ncurses installed in order
>>to use 'make menuconfig'
make[1]: Leaving directory `/usr/src/linux-2.4.1/scripts/lxdialog'
i already have it installed. i.e ncurses3-1.9.9e-11.i386.rpm and
ncurses-5.0-11.i386.rpm
Then i downloaded gcc-2.96-54 which gave me an rpm error saying major
numbers <=3 are supported.
So i am upgrading rpm to 4.0.1-0.6x and it is giving me an error
failed dependencies libdb-3.1.so is meeded.
Am i going in circles. Is there a simpler way. Please advise.
Noel
_________________________________________________________________________
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