I have a file which has only one colomn of numbers,ex:
122
173
292
400
979
2152
2339
2376
2387
2446
2450
What ksh / unix command should I use to create a file in which those numbers will be in one line,like this
122 173 292 400 979 .... etc
Thanks a lot for help (9 Replies)
Hi
It's possible to switch the line to colon from a file using Perl or AWK?
for example my file have somthing like this:
10 11 12 13 14
20 21 22 23 24
30 31 32 33 34
I want to have a file with the line switched like :
10 20 30
11 21 31
12 22 32
13 23 33
14 24 34
Thanks a lot (4 Replies)
hi , i am very new to perl . scriptting.. pllease can any one help me ...pleaseeeeeee
i ll have a file which look likes
123 |something |567
456 |welcome |789
457 |inboxpost |790
.
.
123 |something |567
i have to execute all the lines in the file except the first and the... (14 Replies)
I am familiar with using tar and exclude/include files:
tar zcf backup.dirs.tgz --files-from=include.mydirs --exclude-from=exclude.mydirs --no-recursion
but was wondering if I could use find in the same way. I know that you can just specify the directories to exclude but my list is... (2 Replies)
Hi Gurus.
I have a directory and i receive many files with extension .log. I processed the file as i get it. i want to process all the files except one which i know i don't want to process.
cd /backup/temp/rajesh/PACS #--- directory , under this i have below files... (1 Reply)
hi,
i am trying to use a exclude file to exclude some file directories while making a tar archive. This is my command:
tar -pcvf orahome10gR2.tar.gz db_1 -X /home/oracle/excludeFile.txt /home/oracle/
when i execute it, it seem to be tar-ing. But once is done, i cd to /home/oracle and could... (2 Replies)
Hello,
I have a list of patterns which I'd like to exclude from a file. I tried to do
while read line
do
grep -v $line file >> new.file
done < mylist
But obviously it won't work. It only works for just grep. I know I can do:
grep -Ev 'pattern1|pattern2|...' myfile
but my... (7 Replies)
Hello everyone,
I try to find folders older than 3 years and display them, but excluding some directories, the below code does NOT exclude listed directories:
find . -maxdepth 3 -mtime +1095 -type d -exec ls -l {} \; | grep -vFf oldExclude >> older
oldExclude
Folder1/
Folder2/... (7 Replies)
i have a file which have two columns, 2nd column have duplicate values and i want to delete and keep only distinct on basis on 2nd column.
-bash-4.1$ cat file_re
7440 713543695
7441 713543695
4603 714457614
4602 714457614
40301 717937765
40281 717937765
33741 721208982... (2 Replies)
Discussion started by: mirwasim
2 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)