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1. Shell Programming and Scripting
need to create shell script to read the table's name from file and connect SQL SERVER using isql (odbcunix)
i 'm able connect to database with below command line syntex but i could not get working in shell script with SQL and storing the row count in variable.
isql -v DSN USERNAME PASSWD
... (6 Replies)
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2. UNIX for Dummies Questions & Answers
Hi guys,
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3. Shell Programming and Scripting
Hi All,
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5. Shell Programming and Scripting
Hi,
I have data in my text file something like this.
adams
robert
ahmed
gibbs
I want to use this data line by line as input to an sql query which i run by connecting to an oracle database from shell.
If you have code for similar scenario , please ehlp.
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6. Shell Programming and Scripting
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7. Shell Programming and Scripting
hi all
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8. Shell Programming and Scripting
I want to write a script to go to particular path in file and run shell script from there.
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9. Shell Programming and Scripting
Dear all
I want to execute some isql command from unix shell script. Kindly suggest me. isql command mention below.
isql -U -P
use gdb_1
go
select count (*) from table_x
go (3 Replies)
Discussion started by: jaydeep_sadaria
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10. UNIX for Dummies Questions & Answers
Hi
I want to get the a field from a SQL query into unix shell script variable. the whole situation is like this.
1. Opened a cursor to a table in DB2 databse.
2. Fetching individual rows with the help of cursor.
3. Each row has 4 fields.
I want each of the field in individual shell... (1 Reply)
Discussion started by: skyineyes
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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)