Hi,
I want to start MY_PROGRAM in a bash script with additional parameters given in the CONFIGURATION_ARRAY.
Actual execution
I have absolutly no idea, I already spent hrs on this... can someone please help me? What's the difference between variable N and variable a? It contains the same and both are strings... but the programm only works with a.
Last edited by rbatte1; 08-15-2014 at 10:51 AM..
Reason: Break up the code and the output
Hi. I hope someone can help me with this problem.
Being a novice to Unix, I editted my crontab directly
by typing " crontab -e ". Well, I needed to make some
changes so, I typed " crontab -r ". Now I have no crontab,
and I can't seem to get crontab to write a new file.
I' ve tried:
vi... (4 Replies)
Dear colleagues,
One of my friend have a problem with c code. While compiling a c program it displays a message like
"array type has incomplete element type". Any body can provide a solution for it.
Jaganadh.G (1 Reply)
Hi,
I needed space on a FS, and when I've added the space on the filesystem, I did it trough the regular smitty fs inteface and not with smitty cl_lvm.
Can someone help me to repair the situat before a faileover happen ?
Thanks for your help,:mad: (13 Replies)
cat $1 | sort -n | uniq | $1
in other words, I sort the content of the file and put the ouput in the same file, is there any mistakes in this cshell code ??? (4 Replies)
Hi everyone !
I have a file wich look like this :
>Sis01
> Sis02
...
>Sis44
I want to separe each paragraphe in a different file, so I decide to use the "FOR" loop + sed.
for f in {01..44}
do (5 Replies)
Hi there can anyone help me to spot my mistake and please explain why it appears
My code :
#!/usr/bin/gawk -f
BEGIN { bytes =0}
{ temp=$(grep "datafeed\.php" | cut -d" " -f8)
bytes += temp}
END { printf "Number of bytes: %d\n", bytes }
when I am running ./q411 an411
an411:
... (6 Replies)
I am confused by the value of "currdisk->currangle" after adding operation. Initially the value of "currdisk->currangle" is 0.77500000000000013, but after adding operation, it's changed to "-nan(0x8000000000000)", Can anyone explain ? Thanks! The following is the occasion of gdb debugging.
3338 ... (8 Replies)
Discussion started by: 915086731
8 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)