I downloaded some applications from CD on a windows2000 PC to a Unix Sco machine using the WS-FTP program.
When I tried to run the applications on the Unix machines I got an error. The files must have been corrupted in the process of transferring files from a Windows 2000 to a Unix Sco... (9 Replies)
hi ,
how do i get boot on sco5.04 if it has a kernel corruption .
and no kernel backup . is there any option on the boot : before i hit enter ?
thx
art
:) (3 Replies)
I'm getting the following error after we replaced a failed disk in a mirrored logical volume. We cleared the device entry in ODM before adding the new disk but when we create the mirror we get the following error after running lslv.
0516-022 lslv: Illegal parameter or structure value.... (1 Reply)
Hello!
Do you know the meaning of...
"crw-rw---- 1 informix informix 64 0x020001 Jan 21 2004 rifxroot"
I don't know what the first "c" means. Furthermor, if I try to copy this file (rifxroot) it appears a message:
"cp: cannot open rifxroot: No such device or address"
I don't... (1 Reply)
I've got a backuptape in cpio format that was accidentally overwritten with a very small batch file. As I assume that the cpio header has been overwritten, I cannot extract files from the backup in the conventional manner:
( cpio -itv </dev/rct0
cpio: this is not a cpio file, bad header)
... (0 Replies)
KDE's Kontact PIM breaks quoted-printable vcard files because it
linebreaks in the middle of a word. Take this text for example:
NOTE;CHARSET=UTF-8;ENCODING=QUOTED-PRINTABLE:=D7=A9=D7=95=D7=A8=D7=94 =D7=A
8=D7=90=D7=A9=D7=95=D7=A0=D7=94.\n=D7=94=D7=A9=D7=95=D7=A8=D7=94 =D7=94=D7=
... (7 Replies)
I was installing sfw sudo and its dependencies (libiconv, libintl, libgcc)on Solaris 10, running on an x86 x4200 and I corrupted some PAM library files. It's a standard Solaris 10 base install, with some added software & libraries from a vendor.
I am on console trying to get root access back,... (1 Reply)
In my Windows 2003 server machine I have a winrar or winzip file that i around 3GB.
This zip/rar file is ftped to a unix mahine (HPUX) . FTP is successful. But when it get this file to check if its has been ftped correctly, the file is corrupted.
Is there something wrong that i am doing while... (4 Replies)
Hi all ,
i have an issue in netra 20 server
when i boot the system its getting rebooting
and it is giving tha" /etc/name_to_sysnum " file not found
i done
OK> boot -ar
then also not solved
please can any body send the answer ASAP
regards (3 Replies)
dear all ,
i was trying to run a cron as root , something happened because it displayed
"/tmp/crontabC5a4lB" 14 lines, 495 characters
cron may not be running - call your system administrator
does anyone knows the problems?
thanks
---------- Post updated at 01:05 PM... (2 Replies)
Discussion started by: semaan
2 Replies
LEARN ABOUT DEBIAN
bup-margin
bup-margin(1) General Commands Manual bup-margin(1)NAME
bup-margin - figure out your deduplication safety margin
SYNOPSIS
bup margin [options...]
DESCRIPTION
bup margin iterates through all objects in your bup repository, calculating the largest number of prefix bits shared between any two
entries. This number, n, identifies the longest subset of SHA-1 you could use and still encounter a collision between your object ids.
For example, one system that was tested had a collection of 11 million objects (70 GB), and bup margin returned 45. That means a 46-bit
hash would be sufficient to avoid all collisions among that set of objects; each object in that repository could be uniquely identified by
its first 46 bits.
The number of bits needed seems to increase by about 1 or 2 for every doubling of the number of objects. Since SHA-1 hashes have 160 bits,
that leaves 115 bits of margin. Of course, because SHA-1 hashes are essentially random, it's theoretically possible to use many more bits
with far fewer objects.
If you're paranoid about the possibility of SHA-1 collisions, you can monitor your repository by running bup margin occasionally to see if
you're getting dangerously close to 160 bits.
OPTIONS --predict
Guess the offset into each index file where a particular object will appear, and report the maximum deviation of the correct answer
from the guess. This is potentially useful for tuning an interpolation search algorithm.
--ignore-midx
don't use .midx files, use only .idx files. This is only really useful when used with --predict.
EXAMPLE
$ bup margin
Reading indexes: 100.00% (1612581/1612581), done.
40
40 matching prefix bits
1.94 bits per doubling
120 bits (61.86 doublings) remaining
4.19338e+18 times larger is possible
Everyone on earth could have 625878182 data sets
like yours, all in one repository, and we would
expect 1 object collision.
$ bup margin --predict
PackIdxList: using 1 index.
Reading indexes: 100.00% (1612581/1612581), done.
915 of 1612581 (0.057%)
SEE ALSO bup-midx(1), bup-save(1)BUP
Part of the bup(1) suite.
AUTHORS
Avery Pennarun <apenwarr@gmail.com>.
Bup unknown-bup-margin(1)