You aren't doing anything to print the variables in func1(). The command:
turns shell tracing on. If you want to list the environment variables at that point instead of turning on tracing, change that line to:
I have a script that ultimately will FTP data to certain directories based on a character in the filename. I am creating a function within my script to handle the FTP call. Are the variables that are setup in the original script accessible to the function? If not, is there a way to allow them to... (4 Replies)
I'm trying to get awk to do arithmetic functions with external variables and I'm getting an error that I cannot figure out how to fix.
Insight would be appreciated
money=$1
rate1=$(awk -F"\t " '/'$converting'/{print $3}' convert.table)
rate2=$(awk -F"\t"... (2 Replies)
Hello everybody,
I am having problem in converting byte array variables to Hexa String variables for Linux. I have done, converting byte array variables to Hexa String variables for Windows but same function doesn't work for linux. Is there any difference in OS ? The code for Windows is given... (2 Replies)
Hi,
In the course of my script i have to compare SYSDATE with the 15th of the current month:
if it is greater than i should set a variable date to 15th of the next month
if less than i should set it to the 15th of the current month.
In other words the question is how to set a date variable... (2 Replies)
Hello all,
Problem.
----------
I'm trying to reassign a referenced variable passed to a 'local'
variable in a function but the local variable refuses to be assigned
the content of the referenced variable.
Any ideas would be appreciated.
Objective.
-----------
Eliminate all $VAR... (1 Reply)
I have a bash script with some functions as below and am wondering if I can use the variables declared in setup in the other functions and in the rest of the bash script.
setup(){
none=0; low=1; medium=2; high=3; debug=4
var1="red"
var2="fred"
}
create_basemap() {
... (7 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)
I wrote a very simple script to understand how to call user-defined functions from within awk after reading this post.
function my_func_local {
echo "In func $1"
}
export -f my_func_local
echo $1 | awk -F"/" '{for (k=1;k<=NF;k++) {
if ($k == "a" ) {
system("my_local_func $k")
}
else{... (19 Replies)
I'm reading a text file using a while loop but when I call a function from within this loop it exits that same iteration … even though there are many more lines in the file to be read.
I thought it was something to do with the IFS setting but it appears that a function call (when run... (3 Replies)
Discussion started by: user052009
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)