I did not test this and I didn't bother to check to see if
the date in the filename is an actual date, I just parsed
based on the fact that if you use "_" as a delimiter.
Hi there,
I hope someone can help me with this problem :
I have a directory (/var/www/file/imgprofil) which contains about 10000 JPG files. They have a naming convention thus :
prefix-date-key-suffix.jpg
they all have the prefix p-20050608-
then AAAA is a 4 letter code
the suffix is... (7 Replies)
I am special requirements to rename file.
I have files with names like below:
1_firstname1_lastname1.html
2_firstname2_lastname2.html
3_fistname3_lastname2.html
I would like these file to be renamed as below
firstname1_lastname1.html
firstname2_lastname2.html... (5 Replies)
I need help finding a file through terminal and then renaming it automatically.
Here is what I have so far to find the file:
cd /User/Applications
find . */SourceM.app/banner.png | while read line; do mv "$line" banner-.png; done
I want the script to rename the file "banner.png" to... (6 Replies)
Hi,
This is probably quite simple for an expert, but I keep getting confused about the best approach, grep, awk, sed.
What I have is a range of files numbered 1 to 100. They go
file1.txt
file2.txt
and so on
In each file I need to find and replace a couple of items and rename add a... (5 Replies)
I want to find a file say IIFT and check its size is zero or not. If its zero then I have to rename anothe file say WWFT , which is in another folder to WWFT$Todaysdate.
I tried below command:
cd dir2 (*File WWFT is in dir2)
find dir/ -type f -name 'IIFT*' -size 0 -exec mv WWFT... (3 Replies)
I have a whole file structure with jpeg files where I want to remove a part of the file name. An application added in many files a case conflict in the naming "xyz 017.jpg (Case Conflict 1)"
So, can someone help me how to get rid of the " (Case Conflict 1)"? What I have is this:
find . -name... (2 Replies)
Hi Guys,
I have folder called /input/temp. Inside the folder I have lot of files. I need to find the file of pattern Article_????_test_?????????.txt and replace by format below.
Article_????_?????????.txt
Below is the one which I tried but it doesn't works can you please help us.... (4 Replies)
Hi,
I have a directory which contains multiple files with .txt extension, i want to rename all these file to .bak extension using find command, this is what i've tried, please help me to correct this :
find /home/application/test -name '*.txt' -exec rename 's/txt/bak/' {} \;
seems to... (8 Replies)
Hi,
I have large number of files like below -
UNIX FY17 D21-1c Active user audit - NPP dir owner listing(vctmstt01)_072816 - Notepad.pdf
UNIX FY17 D21-1c Active user audit - TTMS dir owner listing(pvcdmot35)_072816 - Notepad.pdf
UNIX FY17 D21-1c Active user audit - PCP dir owner... (3 Replies)
Discussion started by: solaris_1977
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)