10 More Discussions You Might Find Interesting
1. UNIX for Beginners Questions & Answers
Hi Team,
I'm new to unix and i have a requirement to copy or move files from one directory to another based on current date mentioned in the .zip file name. Note that i need to copy only the recent zip file. please help me with the code
i tried the code as:
#! /usr/bin/sh
find... (3 Replies)
Discussion started by: midhun3108
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2. Shell Programming and Scripting
How to create a shell script to create a folder by using the today's date to take backup using rsync command on every evening around 7 pm.
Kindly help.
Thanks.
To be more precise,
I want to create a script which matches the today's date with server's date format, if matches then creates the... (2 Replies)
Discussion started by: bakula10
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3. UNIX for Advanced & Expert Users
hello,
can someone please suggest a script to rename a file that was generated today and filename that being generated daily starts with date, its a xml file.
here is example.
# find . -type f -mtime -1
./20130529_4995733057260357019.xml
#
this finename should be renamed to this format.... (6 Replies)
Discussion started by: bobby320
6 Replies
4. Shell Programming and Scripting
what does today=${1:-${today}} mean???
I saw a script which has these two lines:
today=`date '+%y%m%d'`
today=${1:-${today}}
but both gives the same value for $today
user:/export/home/user>today=`date '+%y%m%d'`
user:/export/home/user>echo $today
120326... (2 Replies)
Discussion started by: Vidhyaprakash
2 Replies
5. Shell Programming and Scripting
i have my files and the variables value extracted from db is taken as
in1=slot0312
in2=best
in3=it is :veryliong/fine
as varibles..
i have a folder stuctures in my unix machine as :
/2011/hand_sl0312/best/HOD/file1.txt
/2011/hand_sl0312/happy/HOD/file1.txt... (1 Reply)
Discussion started by: rajniman
1 Replies
6. Shell Programming and Scripting
Hi Everyone,
we are running rsync with --backup mode, Are there any rsync options to remove backup folders on successful deployment?
Thanks in adv. (0 Replies)
Discussion started by: MVEERA
0 Replies
7. Shell Programming and Scripting
Morning
My other issue I have seems very simple but im just not seeing it. I have a script that checks on a remote share to see if the backups for some systems have run. Its as simple as:
find /mnt/ukwcs-net-config/WLAN-Controllers/ -mtime -1 -ls | egrep '(cfg)' > wlanlog.txt
cut -c 1-92... (4 Replies)
Discussion started by: ltodd2
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8. UNIX for Advanced & Expert Users
I am trying to backup my .bash_history and I want to keep every version of the backup. I am thinking to put one of these in my crontab.
0 0 * * 0,3 cat .bash_history > boo
0 0 * * 0,3 cp .bash_history boo
I would like the backups to be called boo1, boo2, boo3, etc. I would like to keep... (7 Replies)
Discussion started by: cokedude
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9. Shell Programming and Scripting
hi,
I am building a script to identify those files created/modified today and with file size 0. I am able to find the files with 0 file size and created/modified in last 24 hrs as shown below but not today (current date), I tried using (touch -t time filenm) but in my version of unix at work it... (7 Replies)
Discussion started by: rushs682
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10. UNIX for Dummies Questions & Answers
Hi,
I performed backup on tape and I want to append more files to my previous backup on the same backup tape. But before I do that I need to know the backup file size of the first backup I performed so that I know the available size on the backup tape. Can someone help me what command I will use... (0 Replies)
Discussion started by: ayhanne
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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)