Herez the question,
In a process which writes into file FILE1 with descriptor
fHandler1 and it is run as a background process
where would statements be directed
when stderr descriptor is used.
fprintf(stderr,"some message\n");
assume that session from which it is run is terminated and... (3 Replies)
Hi,
Need some help here on a script I'm writing. I know that STDERR is normally done is this manner:
script 2>stderr.out
However, if I wanted to output the stderr from a rsh command how do I do that?
Example:
su - username -c "rsh $hostname /opt/gilberteu/scriptname" 1>stdout... (5 Replies)
Hi there,
I was wondering if it was possible to pipe stderr to another process.
I need to eval commands given as arguments and I would like to redirect stderr to another process.
I can redirect stderr to a file like this...
toto:~$ command="one=1"
toto:~$ eval $command 2> error
toto:~$... (5 Replies)
Can somebody explain to me why the diff output is not going to stderr?
Yet when I issue a diff from the command line the return code is -ne 1.
I am guessing diff always writes to stdout???
Is there away I can force the difff to write to stderr USING THE CURRENT
template. If possible, I... (5 Replies)
Hello
I try to store stderr into a variable, then if this var is not empty i send an email and stop my script.
I think my problem is due of "<$dump" into my command line.
my bad command line (see samples below on this post)
if ! $returnedStr ;
then
echo ERROR READING DUMP: ... (8 Replies)
Hi Experts,
i have a solaris 9 OS and i get the following message repeated many time in my /var/adm/messages :
Oct 31 16:30:44 baobab rsh: can't get stderr port: Cannot assign requested address
have you any idea how can i resolve this issue ??:confused:
thanks for help (2 Replies)
Hello,
Can you please if the bellow is the proper way of appending a variable to the stderr:
The easiest way to test this,I was able to imagine, was by touching 5 files and afterwards looping trough to the results:
-rw-r--r-- 1 ab owner 0 Sep 14 13:45 file1
-rw-r--r-- 1 ab owner 0 Sep... (7 Replies)
Hi All,
I am writing a shell script code. and i want the stderr to be send to a file and the stdout to be displayed in terminal. In my shell script code i use a read command to get data from user.read -r -p "Enter the type :" data
and while i execute my script i use./my_script.sh 2>... (4 Replies)
Discussion started by: Vinoth R
4 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)