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Vim cheat sheet

Starting Vim

vim [file1] [file2] ...

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Unix signals in Qt applications

It's quite easy to catch unix signals in Qt applications. you may like to ignore or accept them.

#include <QCoreApplication>

#include <initializer_list>
#include <signal.h>
#include 

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setup vsftpd on Ubuntu

install

required packages:

$> sudo apt-get install libpam-pwdfile vsftpd mini-httpd

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extract *.lib from *.dll

do the following steps:

1. exports

extract the functions and classes in *.dll by:
$> dumpbin.exe /exports libsample.dll /out:libsample.def

2. function names

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Oracle Client install in Ubuntu server

(for Qt developers)

installation needs the following procedures:

1. download

download rpm of Instant Client for Linux x86-64 from this link oracle site.

list of required packages:

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#OpenSSL cheat sheet This is a brief howto for socket programmers.

create RSA key pairs

ex: 1024bits length key pair:

$> openssl genrsa -out myprivate.pem 1024
$> openssl rsa -in myprivate.pem -pubout -out mypublic.pem