i have an variable mydate=2008Nov07
i want o/p as in variable mymonth=11 (i.e nov comes on 11 number month)
i want some command to do this for any month without using any loop.
plz help me (1 Reply)
I have a list of dates in the following format: mm/dd/yyyy and want to change these to the MySQL standard format: yyyy-mm-dd.
The dates in the original file may or may not be zero padded, so April is sometimes "04" and other times simply "4".
This is what I use to change the format:
sed -i '' -e... (2 Replies)
Hi, I need to edit a file Protein Data Bank (pdb) and then open that file with the program VMD but when I edit the file with awk, it changes pdb format and the VMD program can not read it.
I need to subtract 34 to field 6 ($ 6).
this is a pdb file :
ATOM 918 N GLY B 103 -11.855 8.675... (8 Replies)
How can I change a string contained in a variable to upper case using csh ???
---------- Post updated at 08:39 AM ---------- Previous update was at 08:29 AM ----------
I think I've got it, using tr has solved the problem
set opt = ` echo $opt | tr "" "" ` (1 Reply)
I have written a csh script that changes the name of file from src to dst.
I am getting the error below:
TESTAmvfiles
DONE TESTAmvfiles
set: Variable name must begin with a letter.
The csh script is:
#!/bin/csh
#... (0 Replies)
Hi
I have an expression that returns 1 if a text is found and 0 if its not found.
I need it the other way around. 0 of found and 1 if its not found
echo $((`cat /var/log/system1/output.html | grep aligment | head -n1 | wc -l`))
Is this possible without doing an if/then/else, just... (5 Replies)
/etc/newsyslog.conf on a Mac OSX system contains:
# configuration file for newsyslog
# $FreeBSD: /repoman/r/ncvs/src/etc/newsyslog.conf,v 1.50 2005/03/02 00:40:55 brooks Exp $
#
# Entries which do not specify the '/pid_file' field will cause the
# syslogd process to be signalled when that... (3 Replies)
I have a .CSV file (file.csv) whose data are all enclosed in double quotes. Sample format of the file is as below:
column1,column2,column3,column4,column5,column6, column7, Column8, Column9, Column10
"12","B000QRIGJ4","4432","string with quotes, and with a comma, and colon: in... (3 Replies)
Dear,
One of our customer which is located in Iraq/Baghdad, has informed us about a official change in daylight saving time in few days later and has asked us to fix this issue.
So, the current timezone of that system is set as 'Asia/Baghdad' which is correct. however to fix the issue I went... (0 Replies)
Hi,
I have two (2) things that I want to do.
First is to change the date format that is in the nth field from MM/DD/YY to YY/MM/DD. Preferably, I wish I know how to make it a 4-digit year but I don't. Problem is I can only assume it is a 20 century
Second is somehow know how to figure out... (1 Reply)
Discussion started by: newbie_01
1 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)