Hi there,
I have written a script called "compare" (see below) to make comparison between 2 files namely test_put.log and Output_A0.log
#!/bin/ksh
while read file
do
found="no"
while read line
do
echo $line | grep $file > /dev/null
if
then
echo $file found
found="yes"
break
fi... (3 Replies)
Hi,
I would like to perform bash which would check the file A.txt to be size 0 or not. If the size is 0, I would copy file B.txt to replace A.txt.
Please help.
Thanks.
-Jason (6 Replies)
Hello,
Please can someone help.
I have created a lv called lv00 in datavg
it has 8 PP's in use and each PP is 256MB
I have 537 Free PP's
Every time I copy my mksysb file to this new lv it gives me an error:
0653-447 Requested a write of ..... but wrote only ...
errpt tells me... (2 Replies)
Hi,
I am using HP-UX B 11.23
I want to copy files from one directory into another directory in such a way that, only the nonexistent files in target directory are copied from source directory
e.g.
dir1 has
file1
file2
file3
dir2 has
file1
file3
now I want that a command... (7 Replies)
Hello,
I have a directory /files/storage in which I have files having file name in format as follows
sabclin.yyyymmdd.0 e.g. sabclin.20110621.0 etc.
I want to copy all files that have a date in their file name i.e. yyyymmdd from today till 300 days in the past to another directory, I need... (3 Replies)
Please help ,
I am in an urgent need, Please help
nawk '{for(i=1;i<=NF;i++){printf("%s\n",$i)}}' filename | sed 's/.*com//' | nawk '/pdf/ {printf("F:%s\n",$0)}' | while read line; do mv $line /images/; done
the above script works for without spaces but,My path is also having some space... (3 Replies)
I am trying to add some code to the begging of a script so that it will remove all the .transcript files, when their is no coressponding .wav file. But it doesnt work.
This is the code I have added:
for transcriptfile in `$voicemaildir/*.transcript`; do
wavfile=`echo $transcriptfile | cut -d'.'... (2 Replies)
Hi All,
Thanks in Advance
I wrote the following code
if
then
echo "version is 1.1"
for i in "subscriber promplan mapping dedicatedaccount faflistSub faflistAcc accumulator pam_account"
do
FILE="SDP_DUMP_$i.csv"
echo "$FILE"
... (5 Replies)
I have a setup where I have two drives.
TV
TVbackup
For what ever reason, I have a lot of content on my TVbackup drive which isn't on my TV drive.
I want to copy all the files across which are on TVbackup but are not currently on TV.
If there is a file with the same name but a... (2 Replies)
Hi,
I am unable to achieve the file exist conditions if there are multiple files same similar name for e.g. in a $Direct i am having files like
aus.txt
aus.txt_pr
aus.txt_2012
i need to put a file exist condition like which is not working
then
echo "File present"
but the... (9 Replies)
Discussion started by: rohit_shinez
9 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)