I am trying to strip all leading and trailing spaces of a shell variable using either awk or sed or any other utility, however unscuccessful and need your help.
echo $SH_VAR | command_line Syntax.
The SH_VAR contains embedded spaces which needs to be preserved. I need only for the leading and... (6 Replies)
Please Help!!
Here is a very simplistic example of what I am trying to accomplish.
I need what I have inbetween the quotes to be read into the shell variable.
x="This is fun"
echo $x
The results of x from the above expression is:
This is fun
Notice the unix takes out the... (1 Reply)
Hello all
i need to pass to my shell script parameter that looks like "2 3 3"
inside the script i need to use this string that looks like this "2 3 3"
but when i try to print the script im getting syntax error , this is my script :
set s = $1
echo $s (1 Reply)
HI
In my script, i am reading the input from the user and want to find the length of the string.
The input may contain leading spaces. Right now, when leading spaces are there, they are not counted.
Kindly help me
My script is like below. I am using the ksh.
#!/usr/bin/ksh
echo... (2 Replies)
Hi,
I,m writing a program in shell script and currently this script is calling a java program.
I have a problem to pass string variable from my shell script to the java program. I don't know on how to pass it and how the java program can call what I have pass from the shell script.
This is... (3 Replies)
I'm a beginner and wasn't able to google my problem...
I would like to pass a string with spaces to a shell script.
my test_shell:
#!/bin/sh -vx
#######################################################
# generate_documentation (c) Ch.Affolter Nov. 2009 Version 1.0 #... (3 Replies)
My shell script generates a bunch of lines of text and passes this text as an argument to a perl script.
I'm able to do this, but for some reason newlines don't get recognized in the perl script and so the script just prints actual '\n' instead of carriage returning, otherwise everything gets... (3 Replies)
I need call expect script from shell script and pass values some of which could contain space. How to make expect to treat such values as one variable? (1 Reply)
There's a JavaScript file that I call from command line (there's a framework) like so:
./RunDiag.js param1:'string one here' param2:'string two here'
I have a shell script where I invoke the above command. I can run it in a script as simple as this
#!/bin/bash
stuff="./RunDiag.js... (4 Replies)
Hello,
I am trying to execute an SQL query from shell script.
A part of script is something like this:
fromDate=`echo $(date +"%F%T") | sed "s/-//g" | sed "s/://g"`
$ORACLE_HOME/sqlplus -s /nolog <<EOD1
connect $COSDBUID/$COSDBPWD@$COSDBSID
spool... (4 Replies)
Discussion started by: sanketpatel.86
4 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)