I'm fairly new to shell scripting and would like to know if what I am seeking to do is possible in shell.
I'm trying to make a list of strings. The list will be looped through and each member of the list will be used to pass a parsing option to python. My script looks something like this:
... (3 Replies)
To test this program it must create 2 integer lists - list1, list2 - and then read and process a series of list commands from a file named "data.txt". Each command and any associated values, list number, value appears on a separate line. All I can do is get it to input the integers and then... (3 Replies)
Hi All,
Need the help in getting the file list which are generated for the time period.
example if i want to get the list of file generated between 11 to 12 clock.
i used the find command search the files with -cmin flag with -60.
find /home/test/* -cmin -60 -type f -exec ls {} \;
... (2 Replies)
File_A contains Strings:
a
b
c
d
File_B contains Strings:
a
c
z
Need to have script written in either sh or ksh. Derive resultant files (File_New_A and File_New_B) from lists File_A and File_B where string elements in File_New_A and File_New_B are listed below.
Resultant... (7 Replies)
Hi everybody,
I'm trying to use a foreach command with two lists. The file.txt looks like this:
var1: 100 200 300
var2: 3 6 9
I'm trying to use a foreach command to associate the two variables together. My script looks like this:
#! /bin/tcsh
set a=(`cat file.txt | grep 'var1' | cut -d... (8 Replies)
Hi,
So I I received two lists for my merchandise and both are similar but differences do occur. I want to combine two lists that have similar names but I dont want the similar name to come up twice because I will end up purchasing two of those items. Heres an example below (file is massive). ... (1 Reply)
Hi togehter!
I would like to write an awk script which prints the first column divided by the sum of the second column:
So if this is my list
1 2
2 1
3 1
4 1
it should print a list like this:
1/5
2/5
3/5
4/5
My idea was to use END like this: (3 Replies)
Hello everybody.
My operating system is Fedora30, shell - bash
I faced combining lists. I will be glad for help regarding strings, arrays and so on.
The bottom line is as follows. It is necessary to combine each element from the first list with elements from the second.
if the second is longer... (4 Replies)
Discussion started by: nezabudka
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)