javiermon

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

javiermon

#!/usr/bin/perl -w
#
#  This script was developed by Robin Barker (Robin.Barker@npl.co.uk),
#  from Larry Wall's original script eg/rename from the perl source.
#
#  This script is free software; you can redistribute it and/or modify it
#  under the same terms as Perl itself.
#
# Larry(?)'s RCS header:
#  RCSfile: rename,v   Revision: 4.1   Date: 92/08/07 17:20:30 

javiermon

Latency Comparison Numbers (~2012)
----------------------------------
L1 cache reference                           0.5 ns
Branch mispredict                            5   ns
L2 cache reference                           7   ns                      14x L1 cache
Mutex lock/unlock                           25   ns
Main memory reference                      100   ns                      20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy             3,000   ns        3 us
Send 1K bytes over 1 Gbps network       10,000   ns       10 us
Read 4K randomly from SSD*             150,000   ns      150 us          ~1GB/sec SSD

javiermon

#include <stdio.h>
#include <string.h>
#include <stdlib.h>                           
#include <errno.h>
#include <unistd.h>
#include <stdarg.h>

typedef signed    int    Int;
typedef unsigned  int    Uint;

javiermon

#include <stdio.h>

void hexDump(char *desc, void *addr, int len) 
{
    int i;
    unsigned char buff[17];
    unsigned char *pc = addr;

    // Output description if given.
    if (desc != NULL)

javiermon

/*
  gcc -g -o nprocnetdev nprocnetdev.c

  Originally based on:
  http://www.iijlab.net/~jean/iflist.c

  Reference:
  http://iijean.blogspot.com/2010/03/howto-get-list-of-network-interfaces-in.html
*/

javiermon

Copyright 2018 Dominik Liebler

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR O

javiermon

import sys

# example:
# python int2ip.py -1062731768
# 192.168.0.8
# 

# stolen from: https://pastebin.com/icqSZhYt
def int_to_ip(signed_int):
    """ convert a 32-bit signed integer to an IP address"""

javiermon

If you want to clone an svn repository with git-svn but don't want it to push all the existing branches, here's what you should do.

* Clone with git-svn using the -T parameter to define your trunk path inside the svnrepo, at the same time instructing it to clone only the trunk:
  
  git svn clone -T trunk http://example.com/PROJECT

* If instead of cloning trunk you just want to clone a certain branch, do the same thing but change the path given to -T:

  git svn clone -T branches/somefeature http://example.com/PROJECT

javiermon

#!/usr/bin/python
# https://www.saltycrane.com/blog/2007/11/remove-c-comments-python/

import re
import sys

def remove_comments(text):
    """ remove c-style comments.
        text: blob of text with comments (can include newlines)
        returns: text with comments removed