Hey guys, can someone help me with this script...
#!/bin/sh
dir=`pwd`
for i in *.f
do if
then M=`wc -l < ${i}
sed -e 's://.*::' < ${i} | \
(echo "//${i} -"$M ; cat - ) > $i.tmp
chmod 700 $i ; mv ${i}.tmp $i
... (6 Replies)
I am trying to create a script but it is giving me errors on Cygwin for the following script. Could someone tell me, what am I doing wrong?
choice=1000
echo "choice is $choice"
while ; do
echo "choice is $choice"
echo 'Please select your option:'
echo '1. Option 1'
echo '2. Option 2'... (3 Replies)
Hi,
I have this example script which gives error ": unexpected operator/operand". I need the '' brackets for operator precedence.
#!/bin/ksh
x="abc"
y="xyz"
z="123"
if -a
then
print "yes"
else
print "no"
fi
Thanks (2 Replies)
Hi
I've made a short script but it is not working. Can some pl. help me out in this?
./123.sh
#! /usr/bin/ksh
# for changing to this directory
cd /layered/relational/scripts
When I run the above scripts, it doesn't change to the above directory. I don't what is the problem? the... (2 Replies)
Hello all,
so this is a script i did for an assignement,
- first option greets the user according to the time after fetching his name
- second options isn't implemented
- third check the performance according to how many users are using the system
- creates a log of names, time and ip of the... (14 Replies)
Please see below mentioned my script ... it ran once without any issue .... then after it is not coming out .... please suggest what is wrong?
#!/bin/ksh
## if (( ${num_errors} > 0 ));
export ACULOG=/home/varshnes/input
export num_errors=10
**** Search for 'Start correcting roll up... (7 Replies)
Hi...
I am fed up in file handing with array for comparing....
1st I want save first 2 columns of file 1
I tried like this,,
{getline< "file1";ln=$1; lt=$2}then I read second file's 1st and 2nd column..and saved like this
and small calculation and initialization
var1 =$1
var2 =$2... (5 Replies)
Dear All
The following is part of my script:
echo ${myarray}
mytitle=`awk '{print substr(${myarray}, 0, length(${myarray})-4)}' /dev/null`
the echo ${myarray} works fine;
however, I keep getting following error for the mytitle=.. part:
awk: line 1: syntax error at or near {
awk: line... (3 Replies)
Hi ! all I am just trying to check range in my datafile
pls tell me why its resulting wrong
admin@IEEE:~/Desktop$ cat test.txt
0 28.4
5 28.4
10 28.4
15 28.5
20 28.5
25 28.6
30 28.6
35 28.7
40 28.7
45 28.7
50 28.8
55 28.8
60 28.8
65 28.1... (2 Replies)
Discussion started by: Akshay Hegde
2 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)