Hi,
I have problems when you save a variable of a command. I have put the following line:
CONEXION_BAGDAD = $ (grep-c "Please login with USER and PASS" $ LOG_FILE_BAGDAD)
But I returned the following error:
syntax error at line 67: `CONEXION_BAGDAD = $ 'unexpected
Because it can happen?... (2 Replies)
I have been trying to setup a static ip, however everytime I do so my internet disconnects and won't connect untill I switch back to dynamic. My router is a NetGear DGN1000 and I'm using it wired. Could anyone help? (0 Replies)
Saw an error while setting up an application called i2phex:
# ./run.sh
java.lang.RuntimeException: Failed to initialize phex.net.repres.i2p.I2PPresentationManager
at phex.common.ManagerController.initializeManagers(ManagerController.java:78)
at phex.Main.main(Main.java:161)After... (0 Replies)
Hello there,
I am new to this forum as well as to the UNIX world. Recently graduated with a degree in Computing and just started learning UNIX & bought 3 Sun Ultra 10 Servers. I was trying to set the Servers up so I can use them; the Servers don't have a VGA card. My laptop, which I would be... (6 Replies)
I'm trying to take a users input, and then such a text file to see if it contains it.
I get an error when running it:
"./Login.sh: Line 8:
echo Username
read username
if ; then
echo Login successful.
else
echo Failed to login.
fi
If someone could give me some input to where I'm... (4 Replies)
Here is my code
#!/bin/bash
username=gnowicki
sed '$s/$/ $username/' < sshd_config 1 <> sshd_config
what this is supposed to do is take the name gnowicki and put it at the end of the last line of the sshd_config and it works except not using the variable, if I put the name "gnowicki" where... (2 Replies)
do
case $option in
d ) CHEC=true;;
# more option processing can go here
\? ) echo "Unknown option: -$OPTARG"
: ) echo "Missing option argument for -$OPTARG";;
* ) echo "Unimplimented option: -$OPTARG";;
esac
done
shift $(($OPTIND - 1)) (2 Replies)
I'm trying to set up a folder in my home directory that will be shared with another user but for some reason it is not working this is what I've done, I have tried two different ways using ACL's and chown/chgrp etc
I set up a group called say: sharedgroup and added both my user (john) and fred... (3 Replies)
Hey guys!
So I decided to set up some basic user authentication on my apache2 server, and I am running into some problems. I followed the documentation provided by apache on their website, but I cant create the password file for some reason. I did a little trouble shooting myself, and found... (40 Replies)
Discussion started by: LinuxIntern445
40 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)