Hi
How to pass multi line text as a command line argument to a program.
(i.e)
./a.out hi this is sample 0 file1
where
hi this is sample should be stored in argv
0 in argv and so on... (3 Replies)
Hi all,
How many arguments can we pass while testing a prgm at command line..
I encountered an issue while passing 10 arguments.
For $10 its taking argument passed for $1 followed by 'zero'.
can we pass more than 9 arguments /Is there any other way.
Thanks,
rrs (6 Replies)
--------------------------------------------------------------------------------
I have this while loop and at the end I am trying to get it to tell me the last argument I entered. And with it like this all I get is the sentence with no value for $1. Now I tried moving done after the sentence... (1 Reply)
Hi,
When i am running the following script 1.sh (without giving the command line arguments) then i am getting the following error.
if
then
echo "UID and PWD are correct"
elif
then
echo "Either UID or PWD is wrong. Please check your UID and PWD"
else
echo "UID and PWD can't be blank"... (9 Replies)
I am working on a script wherein i need the user to enter the Build ID
for eg:the command line will show
enter the build ID
Now on entering the build ID it should be assigned to @ARGV.
How can this be done.? (1 Reply)
Hi, I'm having problems with a script where I wanted every single option specified in the command line to have an argument taken with it, but for some reason only d works in the code I will be showing below.
For example if I did ./thisfile -a something
it would come up with "a chosen with " as... (2 Replies)
Hi,
Can anyone please help me to know what is the maximum number of command line arguments that we can pass in unix shell script?
Thanks in advance,
Punitha.S (2 Replies)
I am new to the world of Unix and shell scripting and have been trying to get the following simple script to work:
#!/bin/bash
echo "what is your age?"
echo "you are $1 years old"I want to be able to enter my age on the command line, when prompted, and it return the... (1 Reply)
hi,,,,
I want to create a command prompt, for example "prompt>", so my prompt need to handle commands, for example "prompt>cmd", so i want to know how to get arguments for my own commands cmd, i.e. default argc should contain arguments count and argv should point to the argument vector i.e, for... (2 Replies)
Hi all,
I am trying to write a code for addition of n numbers which will be passed by the user as command line arguments.
I wrote the following code.
add=0
for (( i = 1 ; i <= $# ; i++ ))
do
add=`expr $i + $add`
done
#echo "sum is : $add"
input :
$./add.sh 12 32 14... (7 Replies)
Discussion started by: PranavEcstasy
7 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)