10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hi All,
Need a help. I am just learning Shell scripting. Need a requirement like to attach variable to array values. Value of from is AF and to is AD.
froml=$(echo $from | tr '' '')
tol=$(echo $to | tr '' '')
Schemas=(AWQM WFCONTROLLER PROVCO PRISM)
for s in "${Schemas}"
do
... (3 Replies)
Discussion started by: pvmanikandan
3 Replies
2. Shell Programming and Scripting
I am new to ksh scripting, specially array. How do i get values from an array and set the value as variable and pass those variables to the different functions??
someone taught me how to get input from a file with have columns i need to read, but now i doesnt know how to set those value to be a... (7 Replies)
Discussion started by: gavin_L
7 Replies
3. Shell Programming and Scripting
Hi,
I need to update rows in a table based on the values in an array variable.
code is :
while read line
do
error_msg="$(echo $line)"
index=`expr $index+1`
done <"logs/$ffile"
rows_count=${#error_msg
}
i=0
while
do
echo "error msgs is... (2 Replies)
Discussion started by: RP09
2 Replies
4. Shell Programming and Scripting
Am using a find command in my script .The output may be one or more. I need to store those values in a array and need to access those. Am unable to find the solution . Any help on this will be helpful.
if
< code>
else a=<find command output which gives the file name either 1 or more>
if 1... (1 Reply)
Discussion started by: rogerben
1 Replies
5. Shell Programming and Scripting
Dear All,
I have been trying to do a simple task of extracting 2 fields from the file (3 rows) and store it in an array variable. I tried with:
#! /bin/bash
ch=`cut -f10 tmp.txt`
counter=0
for p in $pid
do
c=${ch}
echo "$c ..$counter"
counter=$((counter+1))... (2 Replies)
Discussion started by: ezhil01
2 Replies
6. Shell Programming and Scripting
Disclaimer: OP is 100% Awk beginner.
I use this code on ASCII files I need to report against.
awk 'BEGIN {
tokens = 0
tokens = 0
tokens = 0
}
{ for (token in tokens)
{ if ($1 == token){print $0; tokens++;}}}
END {for (token in tokens){
if( tokens ==... (1 Reply)
Discussion started by: alan
1 Replies
7. Shell Programming and Scripting
Hi I'm just learning programming and need some help.
I've taken a data file which has a list of numbers eg:
3
5
32
533
13
2
And I've used sort -n and to sort and then piped it to awk to arrange into an array.
#!/bin/sh
sort -n data.txt |
awk '
{
array=$1
} (4 Replies)
Discussion started by: EL_Chemso
4 Replies
8. Shell Programming and Scripting
I have a array as
CArray=( a1 a2 )
and a1,a2,a3 are also array as:
a1=(1 2 3)
a2=(3 4 5)
now I have this in my code:
for i in `echo "${CArray}"`
do
echo ${$i}
done
It is giving error as :"bad substitution"
It should give me value as
1 2 3
3 4 5
how can I get this...Can u please... (2 Replies)
Discussion started by: joshilalit2004
2 Replies
9. Shell Programming and Scripting
hi all
I am using awk utility to parse the file and fetching two different vaues from two different record of a record set.
I am able to see the result, now i want to store the result and perform some check of each values form database to mark valid and invalid.
could you please help me... (3 Replies)
Discussion started by: singhald
3 Replies
10. Shell Programming and Scripting
i have these values inside variable $blah
BUNGA TERATAI 3 5055 ITH 1 0 0 0 1 1
JADE TRADER 143W ITH 4 0 0 0 4 4
MOL SPLENDOR 0307A ITH 3 0 0 0 3 3
so how do I split them into array with the... (4 Replies)
Discussion started by: finalight
4 Replies
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)