hi,
in a korn shell script, has anyone ever seen an 'exit' being treated as a 'break 2'? I have a script which has 3 nested loops. Within the inner most loop, i'm trying to exit the script on a fault condition. instead of exiting, it's acting as a 'break 2' and then continuing on with the... (4 Replies)
Hi Folks,
I am trying to write a simple script which involves a potentially infinite loop repeating a number of tasks quickly.
I would like to enable the user to break out of this when he/she wishes (some key stroke) but not to break out of the script (i.e. which is what happens when a user... (4 Replies)
I'm loading multiple delimited files into an Oracle DB using sqlldr on Unix. I would like to get only the most recent record per each unique key. There may be multiple updates for each key, but I only want the most recent one.
There is a date column in my delimited files, so I'm using cat to... (2 Replies)
I have this script lines
#!/usr/bin/bash
my_path=`dirname $0`
I_table=$1
echo $I_table
in I_table entry going is ccc_con,cc_gui
I want to break content of I_table in S_Table and T_table on basis of comma as separtor (2 Replies)
Hi All,
I have a text file with the folowing content.
BANGALORE|1417|2010-02-04 08:41:04.174|dob|xxx
BANGALORE|1416|2010-02-04 08:23:19.566|dob|yyy
BANGALORE|1415|2010-02-04 08:20:14.497|dob|aaa
BANGALORE|1414|2010-02-04 08:19:40.065|dob|vvv
BANGALORE|1413|2010-02-04... (4 Replies)
Hi,
I need a ksh script for the below requirement:
i have a Delimited flat file with 200 records delimiter is '|~|'
i need a script to insert space at the end if the record is ending with delimiter '|~|'
if it didnt end with delimiter it should not append space.
Example: ram|~|2|~| ... (16 Replies)
Hi,
How to add trailer record at the end of the flat file in the unix ksh shell scripting
can you please let me know the procedure
Regards
Srikanth (3 Replies)
I'm using the unix terminal in Mac osx yosemite.
I have a file
1;2015p;2014r;2013r;2013p
2;2013p;2013r;2012g
3;2013g
4;2015g;2014g;2013r;2012s;2011s
The first column is the userid, the second column is each event.
I'd like a separate record for each event.
1 2015p
1 2014r
1 ... (5 Replies)
Hi,
I am new to shell script programming. I have written a ksh script to run the sql File placed in server directory and spool the output in destination directory.
Below Command:
$ORACLE_HOME/bin/sqlplus -s $ora_uid @$sqlfile_loc$testquery.sql > $opfiledirectory
It is generating the output... (6 Replies)
Discussion started by: Sumit Arora
6 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)