Hi,
I am new to UNIX and I am more used to simple commands like those in VMS.
One of them is the ability to get the output from a job using the /out=<file> command in VMS.
I want to submit a job (a set of unix commands) using the AT command but to get the output in a file like that used in... (4 Replies)
Hi!
Can anyone tell me what went wrong in my shell script?
for dt_val in `cut -f 1 -d '|' /prod/ods/satyaki/sqlldr/grp.dat`
do
echo $dt_val
done
And, the output is -
23
39 (7 Replies)
i am entering the command, not get the total out put
see the output what i am getting.
SQL> select dbms_metadata.get_ddl ('TABLESPACE','SYSTEM') FROM DUAL;
DBMS_METADATA.GET_DDL('TABLESPACE','SYSTEM')
--------------------------------------------------------------------------------
... (0 Replies)
Well, I was originally going to post this snippet in the original thread titled "how to output ones endlessly like /dev/zero", but that topic was closed without an efficient answer.
It was difficult to find (build) a satisfactory answer to this one, so I thought I'd share it here and as a "fill... (1 Reply)
All,
Can anyone please help me with the below scenario in korn shell script.
Can anyone please give me some hints to proceed on this.
I have a Flat file of the below format.
Input file format:... (1 Reply)
Greetings,
I have a hard time creating a large number of user profiles in a database.
The data file looks like this :
01/01/80 Mitch Conley
.
.
.
.
And I need to put the output into:
Name: Mitch
Surname: Conley
Birthday: 01/01/80
Thanks in advance! (3 Replies)
hello,
i use following command:
md5sum TEST.xml
the output looks like:
900hjidur84hjr938ikv TEST.xml
as you can see, the first part is the md5 code, the second part is the file name, but i only want the first part(md5 code), and save it to a file, how to do that? thanks. (2 Replies)
Hi, I'm new to korn and having trouble capturing the text output from one program in an array that I can then feed into another program. Direct approaches didn't work, so I've tried to break it down thus:
The program lonlat2pixline gives the values I need in the second column, so I print that... (4 Replies)
Can i use 'column' command to get the required 3rd column output?
Input example:
1 2 345678 90
2 2 356 42
3 3 8265 55
Output required:
1 2 345678 90
2 2 356 42
3 3 8265 55
Basically i want the 3rd column to be justified to the right, instead of left.... (3 Replies)
Discussion started by: nurul_nadzirah
3 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)