My script is taking a file "input.in" as input for running the script. My worry is that i need to execute the script only if the file is present, if it's not don't perform the next commands.
Just to have a check at the beginning of the script : If "input.in" exists, then go on. If it's does not... (4 Replies)
Hey Fellas.
I am new to scripting. I have searched through the forums and found a lot of good info, but I can't seem to get any of it to work together. I am trying to find a particular sting in a file, and if the next string matches certain criteria, replace it with a string from a csv... (6 Replies)
Hi,
I had input file with below data,
abcdefghij;20100903040607;1234567891;GLOBAL;
Having values of fields with seperated by semi-colon (;) and ended with line feed (\n).
Through shell script, how can I check the field formatting?
Thanks in advance. (18 Replies)
HI all,
I want to script where all the server names will be in a text file like
server1
server2
server3 . and the script should take servernames from a text file and perform copy of files if the files are not present on those servers.after which it should take next servername till the end of... (0 Replies)
Hi,
I have a script which runs daily. It gets 3 input files test1,test2,test3. I want to do a validation in my script to make sure i have all the 3 files available before running. If any one of the file is missing i want to break the script.
Could you please help me with this request.
... (1 Reply)
Hello,
I have a comma delimited file such as:
cat /statistics/support/input.txt
ID,Serial,quantitity,atribute1,atribute2
1,89569698,5,800,9900,
1,35568658,8,1200,5550
1,89569698,8,320,5500
1,68753584,85,450,200
ID should always have 1 digit, Serial 8 digits, and the others may... (2 Replies)
Hello,
I have the following input file:
auditing account: 3DTP (3dtp)
ERROR: S3 bucket "aws-origin-test1.3dstage.com" has policy statement with public grant: {"Sid":"PublicReadGetObject","Effect":"Allow","Principal":{"AWS":"*"},"Action":,"Resource":}
auditing region: eu-west-1
auditing... (5 Replies)
I have a file number.txt.I need to get 2 inputs from the terminal like a=100 and b=200.If a and b are there in the file,then check if a < b,print "less".If a is not there in the file,print "a is missing" or if b is not there in the file,print "b is missing".
number.txt:
100 200 300 (2 Replies)
Hello,
I have two files of the following form. I would like to remove from File.A where the first three colum matches values in File.B to give the output in File.C
File.A
121 54321 PQR CAT
122 765431 ABC DOG
124 98765 ZXY TIGER
125 86432 GEF LION
File.B
122 765431 ABC
125 86432 GEF... (4 Replies)
Hi ,
I'm looking for some code that can copy and paste form file1 to file2 with 2 criterial meet.
file1:
test "sp-j1"
test "sp-j2"
test "sp-j3"
test "sp-j4"
file2:
sub Pre_Shorts1 (Status_Code, Message$)
global Status
!if Message$ <> "" then print... (3 Replies)
Discussion started by: kttan
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)