08-02-2005
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
My problem is as follows:
I have to write a korn shell script which will run mutiple java applications one after one. For example,
I will execute the java application A first, after it is done I will run application B.
My question is how do I do this? How does my korn shell script know that... (1 Reply)
Discussion started by: madhab99
1 Replies
2. UNIX for Dummies Questions & Answers
ok i decided to go with Mandrake so i went to the site to download it and that took me to a mirror site. ok. so once i get there were can i find the install file(s) that i need? i only see a series of folder and files. the ones that say intall are instructions but i don't see the files themselves.... (3 Replies)
Discussion started by: justchillin
3 Replies
3. UNIX for Dummies Questions & Answers
Does anyone have detailed info on how to download the files. I go to www.freebsd.com and then i dont know what to do. I dont know why i dont know but im drawing a complete blank so is there anyone that can provide a step by step procedure for downloading/installing Linux? :confused: :confused: (3 Replies)
Discussion started by: Corrail
3 Replies
4. AIX
Guys, ive been looking about , but obviously not hard enough, Where do i get AIX 5.3 from ?
DO i need to purchase it or is it free to download on a single user license ?:confused:
Thanks (2 Replies)
Discussion started by: wmccull
2 Replies
5. UNIX for Dummies Questions & Answers
Probably a really easy one for you guru's out there...:rolleyes:
I need to make sure the reverse address lookup daemon in rarpd, is running. How do I do so? :confused:
Did a grep for the process but couldnt find it, also looked in all the normal places, /bin etc...
Cheers (1 Reply)
Discussion started by: JayC89
1 Replies
6. UNIX for Dummies Questions & Answers
When getting a listing of files using "ls -l", my output shows the permissions, #oflinks???, owner, group, size, month-day-time, and file.
In the example below, how would I know what year the file was last modified?
-rw-rw-r--, 28, root, root, 2048, Oct 28 15:10, somefile.txt (2 Replies)
Discussion started by: KGee
2 Replies
7. UNIX for Dummies Questions & Answers
hi,
when we do an "ls -l" on a directory, we get the listing of the contents of that dir...
what is the meaning of some numbers...example in ;
-rw-r--r-- 1 idr supp 0 Feb 18 19:41 dmesg
drwxrwsrwx 2 root sys 96 Dec 27 15:31 test09
drwxr-xr-x 3 bin ... (1 Reply)
Discussion started by: cromohawk
1 Replies
8. Shell Programming and Scripting
can anyone please suggest what is wrong with this command:
for i in ;
do
cat ~/Downloads/Project/p0s0n15.tcl>>~/Downloads/Project/p0s0n15_$i.tcl;
./setdest -n 15 -p 0 -M 5 -t 100 -x 500 -y 500 >>~/Downloads/Project/p0s0n15_$i.tcl;
cat... (3 Replies)
Discussion started by: amithkhandakar
3 Replies
9. UNIX for Dummies Questions & Answers
Hi,
Im trying to do move a file like this as mart of my script on Solaris
mv /path/to/file/file.txt ..
mv: cannot rename /path/to/file/file.txt to ../file.txt: Permission denied.
Im just trying to move it up one level using the following command on a bunch of directories:
find... (4 Replies)
Discussion started by: ideal2545
4 Replies
10. UNIX for Beginners Questions & Answers
Hi Folks -
I have a dumb question.
Why does this work:
pushd "/apps/scripts"
./script.sh
popd
But this doesn't:
./apps/scripts/script.shIs it that obvious where I'm overlooking it? (7 Replies)
Discussion started by: SIMMS7400
7 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)