I have an audit log that is produced each day from a production printer. It names the file using todays date, but it removes the leading zero's. For example: todays date 060104 names the file 6104.txt.
I ftp this file onto a Sun box and pull stats off of it. To keep some consistency to what I am... (2 Replies)
Hi All,
I want to rename a file inside a script which has a date portion appended at the start of the file name.
The script i wrote works fine when the file comes on a day to day basis but sometimes it comes late too.
#!/usr/bin/ksh
cd /space/file/source
dt=$(date "date "+%m%d%Y")... (5 Replies)
Dear Friends,
Need your help once again.
I have this file name
e.g.1) report_12.rp_1
e.g.2) remark_mm.rmr_3
I want it to be renamed as
report_12_1.rp
remark_mm_3.rmr (3 Replies)
I am a complete Unix newbie and I need some help! (Please...)
I need to rename a file from the following format:
Test_Test_EAR_1234.ear
To the following:
Test_Test_EAR.ear
In other words, I need to remove everything after & including the final underscore up to the "." What is the best... (6 Replies)
have this shl that will FTP a file from the a directory in windows to UNIX, It get the name of the file stored in this variable $UpLoadFileName then put in the local directory LocalDir="${MPATH}/xxxxx/dat_files" that part seems to be working, but then I need to take that file and rename, I am using... (3 Replies)
I have to rename a large number of files so that the name of each file corresponds to a code number that is given side by side in a list (textfile).
The list contains in column A the filename of the actual files to be renamed and in column B the name (a client code, 9 digits) that has to be... (7 Replies)
Hello,
I have an outstanding issue..Iam on linux and using a putty to connect to my server and then fire our unix shell script.
At location /usr/sam a file called "er 1 32.txt" out boss transfer via application.
From my end on terminal when i want to transfer this file to some other location... (2 Replies)
I have a file named as Pro_PatAct_MMDDYYYY.csv. I need to renmae it to this Pro_PatAct.csv without the date timestamp. Can someone help me to achieve this using a regular expn. (3 Replies)
Hi there,
I have 350 files in this directory: /home/adams/29 that was mistakenly renamed in this format:
TTFILE_BIT_638478.txt.dat
I want to take out the trailing .dat so that it ends in .txt: TTFILE_BIT_638478.txt
I need help please.
Thank you. (6 Replies)
Hi
Am trying to move a file from one name to another
When I do "ls" to check for the moved filename
I can see the file but when I try the same with a script am unable..
I think am doing some pretty silly error.. please help..
toMove=`ls | grep -E "partition.+"`
mv $toMove partition._org... (7 Replies)
Discussion started by: Priya Amaresh
7 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)