Hi,
I have a function or script like this.
show()
{
echo "Hi"
} | tee -a log
show
This creates a logfile and prints Hi in it. Now when I try to do the same for sql like this:
show()
{
sqlplus -s scott/tiger<<!
select * from details;
!
} | tee -a log
show
Then it gives me a... (2 Replies)
hi
could anybody please suggest me how to put a function memory for particular user.
say i am a user rao. want have a function foo in memory .
i have done this .typed the function function in the shell it worked for the session.but next time i do login its not there .
i can i have a... (6 Replies)
Hi
my shell is tcsh
can I have functions in my shell scripting?
Is the below shell script correct.
Can I have two functions and call one of them as required.
----------
echo "functions"
f1
f1 ()
{ echo "hello" }
f2 () (1 Reply)
Is it not a healthy practice to mix C and C++ standard I/O functions together
e.g.
string name; // this is a declared instance of the string class in C++
printf("\nPlease enter your name: ");
cin >> name;
I did something similar in a program Im designing, and used it several... (1 Reply)
I have korn shells where I want to create a function passing $1 to a function , determine my $STAT_ENV value, set the paths and return
the paths for STATSH,STATPRM,STATSQR,STATSQL,STATCTL TO BE USED IN THE UNIX SCRIPT THE CALLED THE fucnction in the first place.
Can someone tell me the best... (2 Replies)
I'm semi new to unix/linux and am trying to convert a program I wrote in C++ to a bash script. It's a program that prints Fibonacci's series. I have found scripts that will do it, but I'm trying persistently to get this one to work. The problem occurs when I try to return a value from the function.... (3 Replies)
Hi,
I am exploring with defining functions in my BASH shell scripts. However, I am bit confused about how to pass parameters to my functions. I was under the impression that you must do something like the following:
Define a function called "sample_function":
function sample_function {... (3 Replies)
Hey I have a question....
what is the difference between using == vs -eq when testing in WHILE loops.
I use the following test that only worked with == signs....
if
why do i need == and not -eq?
2. I need to re-use some code in a couple places in this script. is functions my best... (5 Replies)
Hi All,
Can any one help me.
I am calling in a function2 with string as parameter from function1, the function1 gives 3 values. how i get the 3 values from funciton2 to function1. i have to give a return or something.
thanks in advance. (2 Replies)
I have 7 functions those need to be executed as command line inputs, I tried with below code it’s not executing function. If I run the ./script 2 then fun2 should execute , how to initiate that function I tried case and if else also, how to initiate function from command line
if
then... (8 Replies)
Discussion started by: saku
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)