I have a question regarding running perl in the current process.
I shall demonstrate with an example.
Look at this.
sh-2.05b$ pwd
/tmp
sh-2.05b$ cat test.sh
#! /bin/sh
cd /etc
sh-2.05b$ ./test.sh
sh-2.05b$ pwd
/tmp
sh-2.05b$ . ./test.sh
sh-2.05b$ pwd
/etc
sh-2.05b$
So... (10 Replies)
Hi all
Recently i had finished a perl script. When i run manually, the script work fine.
But when i wanted to put the script in cron, it didn't get the same output as it run manually. I felt that it only execute the script until certain line then it stop as i see most of the related files didn't... (6 Replies)
I have a local linux machine in which the files are dumped by a remote ubuntu server. If the process in remote server has any problem then empty files are created in local machine. Is there any way using perl script to check if the empty files are being created and delete them and then run a shell... (2 Replies)
Hello everyone,
I have two types of files in a directory:
*.txt
*.info
I have a perl script that uses these two files as arguments, and produces a result file:
perl myScript.pl abc.txt abc.xml
How can I run this script (in a "for" loop , looping through both types of files)... (4 Replies)
Hello
i want create perl script to connect remotely to another machine and run perl script
please note that the remote script check for different variables remotely and not located on local machine
also i want to know how to send interactive variables
i am trying to make script to... (2 Replies)
Hello,
I'm trying to run "csso" (minify css) in a CGI script from the web panel.
That is not working: Returns error 0;
my $cmd = qq`csso stylesheet.css > stylesheet.min.css`;
system($cmd);
But that is working:
my $cmd = qq`echo 'blabla' > stylesheet.min.css`;
system($cmd);
I'm... (12 Replies)
I have a VBA that creates a new directory folder and creates a new text file in that directory. I am trying to run a perl script from the VBA and have created a batch file that gets called from the VBA. That bat file uses a shell file to run a script. When the batch file is called I get the error... (0 Replies)
Linux System having all Perl, Python, PHP (and Ruby) installed
From a Shell script, can call a Perl, Python, PHP (or Ruby ?) file
eg
eg
a Shell script run in a case statement call to run a php file, also Perl or/and Python file???
Like
#!/usr/bin/bash
....
....
case $INPUT_STRING... (1 Reply)
Discussion started by: hoyanet
1 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)