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.
# 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 |
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 |
#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 |
xclip -sel clip < ~/.ssh/id_rsa.pub |
cat «test… test… test...» | perl -e '$??s:;s:s;;$?::s;;=]=>%-{<-|}<&|`{;;y; -/:-@[-`{-};`-{/" -;;s;;$_;see' | |
Не запускай только, ради бога) |
$ curl http://www.cbr.ru/scripts/XML_daily.asp |& grep USD -A3 | tail -1 | grep -oE '[0-9,]+' |
#include <stdio.h> | |
int main() | |
{ | |
int is_cpp = -1 + 2//**/2 | |
; | |
if (is_cpp) | |
printf ("C++\n"); | |
else | |
printf ("C\n"); |
#!/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 |
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.
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"