I have a script that shows me the disk SPace used by different dir under my home dir:
#!/bin/ksh
cd /ednpdtu3/u01/pipe
p1=`df -g | tail -1 | tr -s " " | cut -d " " -f2`
echo "Total Disk Space of Home Dir is $p1 GB"
p2=`df -g | tail -1 | tr -s " " | cut -d " " -f3`
echo "Total Disk Space... (2 Replies)
Hello all,
I am working on a basic script but need a little help.
Issue:
I am running a SQL Query using sqlplus and a shell script. I have the output of the statement stored as variable $A. $A is set to "other text here 45678754 other text here". I need to strip all text except that numeric... (13 Replies)
I have a txt file as follows
Code:
Oct 1 file1 4144
Oct 1 file23 5170
Oct 2 file5 3434
Oct 21 file56 2343
I need to add a new column by marking the right log file from current directory. For example populate like this. Please not in the second columt for "1" it has... (2 Replies)
Hi,
I want to know, how we find out if a column is having a numeric value or not.
For Example if we have a csv file as
ASDF,QWER,GHJK,123,FGHY,9876
GHTY,NVHR,WOPI,623,HFBS,5386
we need to find out if the 4th and 6th column has muneric value or not.
Thanks in advance
Keerthan (9 Replies)
HI,
can any one help me please ..
i have flat file like
qwer123rt ass3242ccf jjk654
kjh838ppp nhdg453ok hdkk34
i want remove numeric characters in the flat file
i want output like this
qwerrt assccf jjk
kjhppp nhdgok hdkk
help me... (4 Replies)
Hi,
I use UBUNTU 12.04.
I have a file with this structure:
Name 2 1245787 A G 12 14 12 14 ....
Name 1 1245789 C T 13 12 12 12.....
I would like to sort my file based on the second column so to have this output for example:
Name 1 1245789 C T 13 12 12 12.....
Name 2 1245787 A G 12 14... (4 Replies)
From googling and reading man pages I figured out this sorts the first column by numeric values.
sort -g -k 1,1
Why does the -n option not work? The man pages were a bit confusing.
And what if I want to sort the second column numerically? I haven't been able to figure that out. The file... (7 Replies)
Hello,
I need help. I have xml file and there are one extra space on number <EpiReference>1 42345</EpiReference>. And of cource, the value change on every new file. I need remove space from that value what is in between <EpiReference> and </EpiReference>. How I can do that?
This are example... (9 Replies)
Hi all,
Does anyone know of an efficient unix script to average each numeric column of a multi-column tab delimited file (with header) with some character columns.
Here is an example input file:
CHR RS_ID ALLELE POP1 POP2 POP3 POP4 POP5 POP6 POP7 POP8... (7 Replies)
Hi All,
I am trying to replace a certain value from one place in a file . In the below file at position 35 I will have 8 I need to modify all 8 in that position to 7
I tried
awk '{gsub("8","7",$35)}1' infile > outfile ----> not working
sed -i 's/8/7'g' infile --- it is replacing all... (3 Replies)
Discussion started by: arunkumar_mca
3 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)