I have a data file. I want to write a shell script that reads a data file and reads position 19 thru 24. if the data in those fields is 002006, than it should change it to 002007.
example:
hello world hello 002006 hello world hello world
hello world hello 002005 hello world hello world... (6 Replies)
Let say in a file I have lines of data like this :
13;2073;461496;15075341;3;001f7d3a;2042063674;
13;2074;461446;15080241;6;001ed33a;2042020154;
13;2075;461401;15085270;6;001f593b;2042054459;
13;2076;461381;15087160;6;001f7483;2042061443;
13;2077;461419;15083419;6;001eca1a;2042017818;
I... (3 Replies)
Hi all,
Let say I have 2 files, 1 is source file and another is destination file.
Source file contains the following :
Kitten
Dogs
Donkey
Chicken
Turkey
And destination file contains :
Kitten, 0
Dogs, 0
Donkey, 0
Chicken, 0
Turkey, 0
Kitten, 0
Dogs, 0
Donkey, 0 (16 Replies)
Hi all,
I have this source file source.txt :
hdrEthernetSwitch1IPAddress 112.13.9.34
hdrEthernetSwitch2IPAddress 112.13.8.245
noOfRevASLAvailable 8000
noOfRevASLInUse 122
maxDOSPayload 7777
pcmdEvdoRUM Enabled
pcmdEvdoFlow Enabled
And I have this datafile to be modified :
... (5 Replies)
I have an array
X = ( -100 -90 -80 -70 -60 -50 -40 30 40 50 60 70 80 90 100 )
I want to find the place where values change from negative to positive. (8 Replies)
Hello Guys
I need your suggestions for the below
We have few unix jobs running in different queues
Is there any way I can manage which jobs goes to which queue and to change their nice value as well
Thanks a lot for your valuable suggestions (1 Reply)
Hi all,
i need help to replace certain values in a file. I need the script to check and match the ID and exNum1. if match, values in $3 (file2.txt) need to replace the value for 'START' (file1.txt) for each match.
The sample structure is like this:-
File1.txt
ID P_6
START ... (4 Replies)
This is my first time posting here...so be gentle.
Suppose I have a test.conf file that contains a value such as a IP. I would like to be able to use the Dialog Utility in Linux to allow me to enter the new IP in a Dialog form...and the results get saved into the test.conf file in the place... (4 Replies)
I have xml file like below, i want change the values at default-value place of each argument name using shell script. like
where argument name= protocol and default-value=tcp,
where argument name =port and default-value= 7223,
where argument name = username and default-value=test,
example
... (12 Replies)
Hello all,
I have a file looks like a xml file:
....
<SrcIntDef>WAUXDFXXX<\SrcIntDef>
<SrcIntRep>WUBGIUNXXX<\SrcIntRep>
...
For these 2 lines I will change the values. So for result it should look like:
...
<SrcIntDef>WUBGIUNXXX<\SrcIntDef>
<SrcIntRep>WAUXDFXXX<\SrcIntRep>... (4 Replies)
Discussion started by: API
4 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)