I want to find out Row which starts with, the user specified details to a script.
In general I know what command to be given.
awk '$0~/^Vi/' BReject
But I need to pass on $1 param of command line at the place of 'Vi'.
I tried with -v subst=$1
awk -v subst=$1 '$0~/^subst/' BReject
But it... (5 Replies)
i need to seperate values seperated by delimiters and assign it to an array.. can u plz help me on that.
Variables = "asd,rgbh,(,rty,got,),sroe,9034,"
i need to assign the variables into arrays..
like..
var=asd
var=rgbh.. and so on
how do i do this. i need to reuse the values stored in... (6 Replies)
Hi I am new to shell scripting and trying to get values from a text file,
I have a text file with values seperated with "|". like
aga|120220090525|120220090525|120220090525|120220090530
bab|120220090530|120220090530|120220090535|120220090535|120220090535... (4 Replies)
Hello
I need to pass some environment parameters to a datastage job and am getting an error when trying to send the complete concatinated variable. I have decided to parse out just the values and send as parameters but am struggling to find the best way to do this (actually I am not very... (3 Replies)
Hello. I'm trying to delete one character in determinate position.
Example:
qwEtsdf123Ecv34
<delete character in positión 3>
Result:
qwtsdf123Ecv34
Plase, help me.
Thanks (4 Replies)
Hi
Description of input file I have:
-------------------------
1) CSV with double quotes for string fields.
2) Some string fields have Comma as part of field value.
3) Have Duplicate lines
4) Have 200 columns/fields
5) File size is more than 10GB
Description of output file I need:... (4 Replies)
Hello,
I have a tab-delimited table that may contain 11,12 or 13 columns. Depending on the number of columns, I want to cut and get a sub table as shown below. However, the awk commands in the code seem to be an issue. What should I be doing differently?
#cut columns 1-2,4-5,11 when 12 &... (3 Replies)
Hi
what i want:
listing files in a special range
ls -lrt 20120601{05..06}*
...
-rw-rw-r-- 1 imp imp 279 1. Jun 07:51 201206010550
-rw-rw-r-- 1 imp imp 279 1. Jun 07:01 201206010600
-rw-rw-r-- 1 imp imp 279 1. Jun 07:11 201206010610
-rw-rw-r-- 1 imp imp 279 1. Jun 07:21... (1 Reply)
I have a string of source files
ENBL_PX11_LIBSRC = pltsub.f xpltlib.f xbuplot.cI want to replace .f and .c with .o
to get
ENBL_PX11_LIBOBJ = pltsub.o xpltlib.o xbuplot.o
However I am having trouble doing this with subst. (5 Replies)
Hi All,
We have a requirement of picking nth position value by using cut command. value would be delimited by any symbols. We have to pass delimited value and postition to get the value in a string.
ex.
echo "A,B,C,D,E" |cut -d "," -f3
echo "A|B|C|D|E"|cut -d "|" -f2
Kindly frame the... (5 Replies)
Discussion started by: KK230689
5 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)