If I understood your requirement correctly, then following may help you in same. 1st case: Let's say in case values in Input_file TX1-1 will be in increasing order then following may be helpful for same.
Output will be as follows. 2nd case: Assuming when your Input_file doesn't have values of >TX1 increasing order, then following may help you in same.
Output will be as follows.
Thanks,
R. Singh
Greetings, people of UNIX/Linux forums.
I am having a problem with a script, where I am trying to create a new variable. The value of this variable would be dependent on the value in a couple other previous variables (all variables are 2-digit integers). Here is my code:
#set the stations... (3 Replies)
Hi Unix experts
I have simple text files in which the number of lines vary from one file to another. They look like the following:
#
#
.
.
34 46
76 72
39 68
I want to grab the first number of the last line of each file (let's say A= 39 in the above example), which is... (2 Replies)
I want to put text stored in a variable into a file on the 7th line. I'm having trouble with this line:
sed '7i\'$text'' $file
It works perfectly for a single word, but fails if there are two words because of the space. I've tried several forms of quoting and this is the only one that... (2 Replies)
Dear All,
we have a command output which looks like :
Total 200 queues in 30000 Kbytes
and we're going to get "200" and "30000" for further process. currently, i'm using :
numA=echo $OUTPUT | awk '{print $2}'
numB=echo $OUTPUT | awk '{print $5}'
my question is : can I use just one... (4 Replies)
In my script I am using sed to insert a line.
Suppose I have a variable called ck_size=5 and a temporary file called tmp
I want to add a certain line in the tmp file .Please see the below command
sed -i '2a\maitee is $ck_size' /dun/homes/lrsprod/tmp
I want in 2 line of tmp file... (7 Replies)
Hi i have to insert the below line into a specific line number of another file
export MBR_CNT_PRCP_TYPE_CODES_DEL="'01','02','04','05','49','55','UNK'"
I have passed the above line to a variable say ins_line. I have used below command to perform the insert
awk 'NR==3{print "'"${ins_line}"'"}1'... (1 Reply)
Hi All,
I have a directory containing multiple files.
and also a txt file which contains the list of all filenames and certain values.
I want to read the text file line by line and if its 2nd column is matched with the filename in directory, then it must insert the values in 7th column to... (14 Replies)
hi all,
i have one shell script like this
#!/bin/bash -xv
ENV_NAME=`cat $IB_HOME_DIR/cfg/ibProfile.sh | grep "RDM_CONN" | cut -f 2 -d "@"`
CURRENT_DIR=`pwd`;
string=$IB_HOME_DIR
string1="$string/FRGFOLDER/input"
#sed "s/string3/$string1" frg_event_src.sql > modifiedinsert.sql
sqlplus... (2 Replies)
I have the following script, and I want to assign the output ($10 and $5) from awk to N and L:
grdinfo data.grd | awk '{print $10,$5}'| read N L
output from gridinfo data.grd is: data.grd 50 100 41 82 -2796 6944 0.016 0.016 3001 2461. where N and L is suppose to be 3001 and 100. I use... (8 Replies)
Discussion started by: geomarine
8 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)