Notes by voodoo
Displaying notes 21 - 30
Created by voodoo on August 12, 2011 12:47:50
Last update: August 12, 2011 13:03:00
Use fstream and seekg :
#include <iostream>
#include <fstream>
i...
With stat :
#include <iostream>
#include <sys/stat.h>
...
Created by voodoo on August 12, 2011 12:21:39
Last update: August 12, 2011 12:21:39
For OpenSSH , use the -X or -Y switch to enable X11 forwarding (GUI applications can be launched transparently):
ssh -X -l username ssh_host
# or
ssh -Y -l u...
This works only if the server side sshd is configured to allow X11 forwarding.
Created by voodoo on August 11, 2011 12:49:55
Last update: August 11, 2011 12:49:55
To diff two directories:
diff dir1 dir2
To diff two directories recursively:
diff -r dir1 dir2
Version of diff :
$ diff -v
diff (GNU diffutils) 2.8.1
Copyrig...
Created by voodoo on August 09, 2011 20:21:39
Last update: August 09, 2011 20:21:39
Use the -P switch to scp over an alternate port:
$ scp -P 8022 srcFile user@remote_host:/remote/de...
Created by voodoo on August 08, 2011 19:54:34
Last update: August 09, 2011 07:23:45
To install the base qemu system:
$ sudo apt-get install qemu
But that only installs the emulators matching the host system ( i386 for example). To install the emulator for other architectures like mips , use:
$ sudo apt-get install qemu-kvm-extras
For Fedora, the command is:
$ sudo yum install qemu-launcher
Created by voodoo on August 08, 2011 20:13:13
Last update: August 08, 2011 20:13:13
Find the package name:
$ sudo apt-cache search pcre
libpcre3 - Perl 5 ...
Install the package:
$ sudo apt-get install libpcre3-dev
Reading pac...
Created by voodoo on August 08, 2011 13:03:53
Last update: August 08, 2011 13:04:12
This error was caused my a missing include ( snprintf was defined in cstdio ). To fix, just add:
#include <cstdio>
Created by voodoo on August 08, 2011 12:28:16
Last update: August 08, 2011 12:28:16
$ sudo yum whatprovides pcre-devel
Loaded plugi...
Created by voodoo on July 21, 2011 08:12:39
Last update: July 21, 2011 08:12:39
RFC 1918 reserved three blocks of IP addresses for private internets. These come in handy when you create an internal IP network.
Range RFC 1918 Name Description
10.0.0.0 - 10.255.255.255 24-bit block A single class A network number
172.16.0.0 - 172.31.255.255 20-bit block 16 contiguous class B network numbers
192.168.0.0 - 192.168.255.255 16-bit block 256 contiguous class C network numbers
Created by voodoo on June 21, 2011 08:19:33
Last update: June 21, 2011 08:34:28
Got "base64: invalid input" error:
$ base64 -d base64_encoded.txt >original.bin
ba...
which can be easily dismissed as "input is invalid base64 encoded" or "partial input". But I know it's valid base64 encoded input!
The problem was, the input was base64 encoded on Windows! The error goes away after converting to Unix format with dos2unix .
dos2unix < base64_encoded.txt | base64 -d >origina...
Version of base64 used:
$ base64 --version
base64 (GNU coreutils) 8.5
...
