I know the Sun Solaries versions are ( 2.3 , 2.4 , 2.5 ... 7 , 8 ) .
But some times I see sun os v5.x what does it mean ??
also what is the last new machine for sun and what are its details specifications .
Thanks (3 Replies)
Hello Again,
Ok guys. Thanks again for your help last time but I am in need of your experience again. I wrote this script:
#!/bin/sh
# List either files or directories in individual accounts
# using 1, 2 or 3 with invalid
case $1 in
echo select 1 to see the FILES in your... (3 Replies)
this is the simple question, please help me!
the question is: how to send exactly 50 ICMP Echo request packets with 500 bytes of payload to 202.139.129.221?
I tried to use ping -F 500 202.139.129.221, but it didn't work.
Thanks! (6 Replies)
I am trying to check through all of a certain type of file in all main directories, and find the top 10 that are taking up the most space. How can I do that? I was thinking like du *.file | sort -n | head (1 Reply)
I have a file name in this format
ABC_WIRE_TRANS_YYYYMMDD_00.DAT
I need to cut out the _00 out of the file name everytime. It could be _00, _01,_02, etc ....
How do I cut it out to look as follows?
ABC_WIRE_TRANS_YYYYMMDD.DAT (6 Replies)
Hi everybody:
Could anybody tell me if I have several files which each one it has this pattern name:
name1.dat name2.dat name3.dat name4.dat name10.dat name11.dat name30.dat
If I would like create one like:
name_total.dat
If I do:
paste name*.dat > name_total.dat (15 Replies)
Hey all! what matching expression might I use to match all characters included in \W, EXCEPT < and > ?
for example:
@tokens=split(/ ???? /,$string);
I've dubiously tried \W but this clips off the first letter of each "token", for some reason ... (2 Replies)
I'm just starting this whole scripting thing, and I'm trying to write a simple script which will ask the user to press a key between 3-7. If they press a key that's not between 3-7, it will tell the user such.
Here's my script:
#!/bin/bash
blah=1
echo -n "Press a key from 3-7."
read... (3 Replies)
So, I have the following code:
cat testfile.txt | awk -F, '{ print $1" "$2" "$3" "$4" "$5 }' | read DOC ORG NAME
echo "$DOC"
echo "$ORG"
echo "$NAME"
My testfile.txt looks something like the following:
Document Type,Project Number,Org ID,Invoice Number
It will eventually be more... (14 Replies)
Discussion started by: Parrakarry
14 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)