I have to rename multiple file. I have a file like this :
I want to rename like this :
Actually file name contain the date like 20130411.
I want to change today date to yesterday format.
Thanks in advance.
Last edited by Franklin52; 04-11-2013 at 07:42 AM..
Reason: Please use code tags for data and code samples
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)
Hi,
I am getting a file name from a remote server thru ftp and storing this filename in a variable. I am doing this in ftp mode.
for ex: the filename is like emp_010208.
This file name has to be changed to emp.
Can you please let me know how we can do this while we are in ftp mode.
thanks,... (0 Replies)
I'm looking to determine if I can use a grep command to read file and rename the file based on the first 3 characters of the data in the file.
An example is:
Read FileA
If the first 3 positions of the data in the file are "ITP", then rename the file as FileA_ITP, else if the first 3... (3 Replies)
Hello all.
I am new to this forum (and somewhat new to UNIX / LINUX - I started using ubuntu 1 year ago).:b:
I have the following problem that I have not been able to figure out how to take care of and I was wondering if anyone could help me out.:confused:
I have all of my music stored in... (7 Replies)
dear all,
i have case with this:
i have file 20110601.txt so i want to auto rename this file like this 20110601_20110602.txt
actual this rename will create if 20110601 came in date 20110602(date from system unix)
so this will be using
#!/bin/bash
folder='/home'
desti='/home/desti'... (2 Replies)
how to rename a file if I don't know file location ?
Can we below command :
$ find / | mv file1.txt
I am not sure........can any1 help me out ?
Thanks,
Tushar Joshi:mad: (1 Reply)
Hi,
i have a file with some data ..look for some specific value in the file and if found that value rename the file with the value found in the file..
ex..
File.txt
1236 43715825601ANDERSSON,
1236 437158256031963040120060901200609010000000
1236 43715825604123 MCCL AVE UPPER
1236 ... (11 Replies)
I have one input file ABC.txt and one output DEF.txt. After the ABC is processed and created output, I want to rename ABC.txt to ABC.orig and DEF to ABC.txt. Currently when I am doing this, it does not process the input file as it cannot read and write to the same file. How can I achieve this?
... (12 Replies)
I have a specific set (all ending with .bam) of downloaded files in a directory /home/cmccabe/Desktop/NGS/API/2-15-2016. What I am trying to do is use a match to $2 in name to rename the downloaded files. To make things a more involved the date of the folder is unique and in the header of name... (1 Reply)
In the below bash I am trying to copy the only text file (always only one) in /home/cmccabe/Desktop/list/QC/metrics.txt and rename each of the 3 text files according to /home/cmccabe/Desktop/test/list.txt using lines 3, 4 ,5. This format (that is list.txt) is always 5 lines. Thank you :).
... (12 Replies)
Discussion started by: cmccabe
12 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)