Frodox

# iptables-save 
# Generated by iptables-save v1.4.12 on Sun May  5 22:05:44 2013
*filter
:INPUT ACCEPT [0:0]
:FORWARD ACCEPT [0:0]
:OUTPUT ACCEPT [5:224]
-A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT
-A INPUT -p icmp -j ACCEPT
-A INPUT -i lo -j ACCEPT
-A INPUT -p udp -m state --state NEW -m udp --dport 137 -j ACCEPT

Frodox

curl -G http://checkip.dyndns.org/index.html |grep "Current IP Address" |cut -d ':' -f 2 |cut -d '<' -f 1

wget -O - -q icanhazip.com

Frodox

#include <stdbool.h> 
– Keith Thompson

If the compiler does not support C99, you can define bool type yourself:

// file : myboolean.h
#ifndef MYBOOLEAN_H
#define MYBOOLEAN_H

#define false 0

Frodox

xclip -sel clip < ~/.ssh/id_rsa.pub

Frodox

cat «test… test… test...» | perl -e '$??s:;s:s;;$?::s;;=]=>%-{<-|}<&|`{;;y; -/:-@[-`{-};`-{/" -;;s;;$_;see'
Не запускай только, ради бога)

Frodox

$  curl http://www.cbr.ru/scripts/XML_daily.asp |& grep USD -A3 | tail -1 | grep -oE '[0-9,]+'

Frodox

#include <stdio.h>

int main()
{
    int is_cpp = -1 + 2//**/2
    ;
    if (is_cpp)
            printf ("C++\n");
    else
            printf ("C\n");

Frodox

#!/bin/bash

$ echo "qwertyuuiop cxcx xcxc x x xc x" | tr -cd ' '|wc -c

# work with unicode
$ echo "qwertyuuiop cxcx xcxc x x xc x" | grep -o 'x'|wc -l

Frodox

GNU GENERAL PUBLIC LICENSE

Version 3, 29 June 2007

Copyright © 2007 Free Software Foundation, Inc. <http://fsf.org/>

Everyone is permitted to copy and distribute verbatim copies of this license document, but changing it is not allowed.

Frodox

Description

This simple script will take a picture of a whiteboard and use parts of the ImageMagick library with sane defaults to clean it up tremendously.

The script is here:

#!/bin/bash
convert "$1" -morphology Convolve DoG:15,100,0 -negate -normalize -blur 0x1 -channel RBG -level 60%,91%,0.1 "$2"

Results