root@lapek:~# sudo update-alternatives --config default.plymouth
Są 2 dostępne alternatywy dla default.plymouth (dostarczające /lib/plymouth/themes/default.plymouth).
Wybór Ścieżka Priorytet Status
------------------------------------------------------------
* 0 /lib/plymouth/themes/kubuntu-logo/kubuntu-logo.plymouth 150 tryb auto
1 /lib/plymouth/themes/kubuntu-logo/kubuntu-logo.plymouth 150 tryb ręczny
2 /lib/plymouth/themes/ubuntu-logo/ubuntu-logo.plymouth 100 tryb ręczny
Proszę wcisnąć Enter, aby pozostawić bieżący wybór[*]; albo wpisać wybrany numer: 2
update-alternatives: using /lib/plymouth/themes/ubuntu-logo/ubuntu-logo.plymouth to provide /lib/plymouth/themes/default.plymouth (default.plymouth) in tryb ręczny
root@lapek:~# sudo update-initramfs -u
update-initramfs: Generating /boot/initrd.img-3.5.0-46-generi
poniedziałek, 24 lutego 2014
środa, 19 lutego 2014
Resource leak - java eclipse
good way:
When you write a code like bellow:
import java.util.Scanner;
public class userio
{
public static void main(String[] args)
{
Scanner input = new Scanner(System.in);
System.out.print("Enter a line of text: ");
String line = input.nextLine();
System.out.println("you entered: "+line);
}
}
in marked line you always have warning when you write your code in eclipse.
Eclipse suggest you that you have resources leak. To eliminate this problem use case like bellow
import java.util.Scanner;
public class userio
{
public static void main(String[] args)
{
Scanner input = new Scanner(System.in);
try
{
System.out.print("Enter a line of text: ");
String line = input.nextLine();
System.out.println("you entered: "+line);
}
finally
{
input.close();
}
}
}
--------------------------
When you write a code like bellow:
import java.util.Scanner;
public class userio
{
public static void main(String[] args)
{
Scanner input = new Scanner(System.in);
System.out.print("Enter a line of text: ");
String line = input.nextLine();
System.out.println("you entered: "+line);
}
}
in marked line you always have warning when you write your code in eclipse.
Eclipse suggest you that you have resources leak. To eliminate this problem use case like bellow
import java.util.Scanner;
public class userio
{
public static void main(String[] args)
{
Scanner input = new Scanner(System.in);
try
{
System.out.print("Enter a line of text: ");
String line = input.nextLine();
System.out.println("you entered: "+line);
}
finally
{
input.close();
}
}
}
--------------------------
niedziela, 16 lutego 2014
piątek, 14 lutego 2014
eclipse shortcut
usefull shortcut to use alternativly to: System.out.println() in java:
type Sysout or syso and press ctrl+space
nmcli fedora20
[marek@localhost log]$ nmcli connection show active
NAZWA UUID URZĄDZENIA DOMYŚLNE VPN GŁÓWNA-ŚCIEŻKA
Połączenie Orange 079fa768-31c6-421f-9a0e-b29e654588f1 ttyACM1 tak nie -
nmcli connection up/down id "Połączenie Orange"
NAZWA UUID URZĄDZENIA DOMYŚLNE VPN GŁÓWNA-ŚCIEŻKA
Połączenie Orange 079fa768-31c6-421f-9a0e-b29e654588f1 ttyACM1 tak nie -
nmcli connection up/down id "Połączenie Orange"
czwartek, 13 lutego 2014
connection test
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.
GET /index.html HTTP/1.0
HTTP/1.1 200 OK
Date: Thu, 13 Feb 2014 10:17:11 GMT
Server: Apache/2.4.6 (Ubuntu)
Last-Modified: Thu, 13 Feb 2014 10:16:24 GMT
ETag: "b1-4f246fb464b2b"
Accept-Ranges: bytes
Content-Length: 177
Vary: Accept-Encoding
Connection: close
Content-Type: text/html
<html><body><h1>It works!</h1>
<p>This is the default web page for this server.</p>
<p>The web server software is running but no content has been added, yet.</p>
</body></html>
Connection closed by foreign host.
python substitute:
#!/usr/bin/python
import socket
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.connect(("www.google.pl",80))
s.send("GET /index.html HTTP/1.0\n\n")
data = s.recv(10000)
print "received data: ",data
s.close()
Connected to localhost.
Escape character is '^]'.
GET /index.html HTTP/1.0
HTTP/1.1 200 OK
Date: Thu, 13 Feb 2014 10:17:11 GMT
Server: Apache/2.4.6 (Ubuntu)
Last-Modified: Thu, 13 Feb 2014 10:16:24 GMT
ETag: "b1-4f246fb464b2b"
Accept-Ranges: bytes
Content-Length: 177
Vary: Accept-Encoding
Connection: close
Content-Type: text/html
<html><body><h1>It works!</h1>
<p>This is the default web page for this server.</p>
<p>The web server software is running but no content has been added, yet.</p>
</body></html>
Connection closed by foreign host.
python substitute:
#!/usr/bin/python
import socket
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.connect(("www.google.pl",80))
s.send("GET /index.html HTTP/1.0\n\n")
data = s.recv(10000)
print "received data: ",data
s.close()
python socket practice
#!/usr/bin/python
import socket
host = ['www.google.pl','www.onet.pl','www.facebook.com','www.redhtube.com','www.youtube.com']
for h in host:
ip = socket.gethostbyname(h)
print "ip: ",ip ,"host:",h
import socket
host = ['www.google.pl','www.onet.pl','www.facebook.com','www.redhtube.com','www.youtube.com']
for h in host:
ip = socket.gethostbyname(h)
print "ip: ",ip ,"host:",h
wtorek, 11 lutego 2014
use deb package in Fedora/Redhat distros
Remeber you always can install and use alien but
for this purpse i use:
ar - create, modify, and extract from archives
output:
[root@localhost Pobrane]# ar vx ubuntu-wallpapers-saucy_13.04.0+13.10.20130823-0ubuntu1_all.deb
x - debian-binary
x - control.tar.gz
x - data.tar.gz
for this purpse i use:
ar - create, modify, and extract from archives
output:
[root@localhost Pobrane]# ar vx ubuntu-wallpapers-saucy_13.04.0+13.10.20130823-0ubuntu1_all.deb
x - debian-binary
x - control.tar.gz
x - data.tar.gz
Subskrybuj:
Posty (Atom)