hi all,
Newbie to Unix and AIX. So my apologies if this is in the wrong place, etc.
Working on box -
uname# uname -a
AIX appt 3 5 00C08AAF4C00
when i type man (some valid command)
it just returns me to the # prompt.
Its running on the KSH shell.
man was working but i was trying... (14 Replies)
hi all,
Newbie to Unix and AIX. So my apologies if this is in the wrong place, etc.
Working on box -
uname# uname -a
AIX appt 3 5 00C08AAF4C00
when i type man (some valid command)
it just returns me to the # prompt.
Its running on the KSH shell.
man was working but i was trying... (6 Replies)
how to make a line BLINKING in output and also how to increase font size in output
suppose in run a.sh script
inside echo "hello world "
i want that this should blink in the output and also
the font size of hello world should be big ..
could you please help me out in this (3 Replies)
#include <stdio.h>
#include <math.h>
// this function calculates the volume of a Cylinder
int main(void)
{
int r; // radius
int h; // height
double M_PI; // pi
int pOne = pow (r, 2);
// get user input of radius and height
printf ("Enter your... (3 Replies)
Hi
I'm creating a script that creates files from svn checkout and compress them using tar.gz
the script gets the repository name from command line argument
i need to capture a number from the last line of the output and create a file name from it.
the svn returns output of all the file... (5 Replies)
Hi Guys,
I am trying to convert a file which has a row based output to a column based output. My original file looks like this:
1
2
3
4
5
6
1
2
3
1
2
3 (8 Replies)
Hi,
i have a script, which is incomplete, am on my way developing it.
Input
1,12,2012,IF_TB001
2,12,2012,3K3
3,Z56,00000,25,229,K900,00, ,3G3, ,USD, ,0000000000,000, , , , 550000000
3,Z56,00000,53,411,W225,00,000, , ,USD,OM170,0000000000,000, , , , -550000000
4,Z56,COUNT, 4,SUM LOC,... (19 Replies)
Sed command to replace a line in a file using line number from the output of a pipe.
Is it possible to replace a whole line piped from someother command into a file at paritcular line...
here is some basic execution flow..
the line number is 412
lineNo=412
Now i have a line... (1 Reply)
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)