Easy to install adobe flash plugin for firefox and chrome browser on you ubuntu.

install chrome:
sudo wget http://www.linuxidc.com/files/repo/google-chrome.list -P /etc/apt/sources.list.d/
wget -q -O - https://dl.google.com/linux/linux_signing_key.pub  | sudo apt-key add -
sudo apt-get update
sudo apt-get install google-chrome-stable

install firefox
sudo apt-get install firefox

install adobe flash plugin for firefox and chrome

sudo apt-get install adobe-flashpluginsudo apt-get install adobe-flashplugin

sudo apt-get install adobe-flashplugin

surfmore ed addon firefox

Firefox addon for surfmore.eu
It can auto surf and auto click klick4credits.
If you want the addon, please register on surfmore.eu via my ref
http://surfmore.eu/index.php?ref=errong_leng
Once ref confirmed, I will send you the addon.
errong.leng@gmail.com|

Recovery your wordpress password if you forgot it.

$ mysql -u root -p
mysql> use wpdb
mysql> update wp_users set user_pass=MD5('ucLinux1!') where wp_users.user_login='errong.leng';
mysql> flush preligage;
mysql> quit

PS:
wpdb is the database name in  wp-config.php

wp-config.php

define('DB_NAME', 'wpdb');
please refer to your case.

errong.leng is the user name, please refer to your case too.
ucLinux1! is the new password, please modify to your own password.
Must call flush preligage; otherwise you have to restart your mysql service.

define('DB_NAME', 'wpdb');

How to recovery mysql root password if you forgot it.

One of the recovery methods for a .MySQL passwordIf you forget the MySQL root password, you can use the following methods to re-set:1. Switch to rootSu root2. KILL out of the system in the MySQL process;Killall -TERM mysqld3. Start MySQL with the following command to start without checking the permissions;Safe_mysqld --skip-grant-tables &4. Then use the empty password to use the root user login to MySQL;Mysql -u root5. Modify the root user's password;Mysql> update mysql.user set authentication_string= PASSWORD ('123456') where User = 'root';Mysql> flush privileges;Mysql> quitRestart MySQL, you can use the new password login.Second, the MySQL password recovery method IIThere may be no system safe_mysqld procedures (ubuntu operating system, apt-get installed mysql), the following method can be restored1. Switch to rootSu root2. stop mysqld;
   /etc/init.d/mysql stop3. Start MySQL with the following command to start without checking the permissions;Mysqld --skip-grant-tables &4. Then use the empty password to use the root user login to MySQL;Mysql -u root4. Modify the root user password 123456 (of course, you need to 123456 into the password you want to set);Mysql> update mysql.user set authentication_string= PASSWORD ('123456') where User = 'root';Mysql> flush privileges;Mysql> quitReboot MySQL/etc/init.d/mysql restartYou can use the new password 123456 login.

Mysql have changed the column "password" to "authentication_string"

Earn Free Credits via vagex on your GCE VMs

Free #Youtube Views #vagex http://vagex.com/?ref=399793

I chose ubuntu 16.04 as my disk image.

First create your VM instance.
Then install xfce desktop, vncser and firefox on it.
$ sudo apt-get update
$ sudo apt-get install xfce4 xfce4-goodies
$ sudo apt-get install firefox
$ sudo apt-get install tightvncserver
$ vncserver

You will require a password to access your desktops.

Password:
Verify:
xauth:  file /home/errong_leng/.Xauthority does not exist

New 'X' desktop is vvs:1

Creating default startup script /home/errong_leng/.vnc/xstartup
Starting applications specified in /home/errong_leng/.vnc/xstartup
Log file is /home/errong_leng/.vnc/vvs:1.log

Then let's setup Firefox viewer of vagex on your GCE VMs via VNCViewer.
I recorded a video via VNCViewer on my android phone.
Please check it for more detail.

OK, everything is done, just let it be, and vagex will give you credits every day.
Earn Free Credits #vagex http://vagex.com/?ref=399793

How to Setup tomcat on ubuntu

First, please setup JAVA on your ubuntu, you can refer to :
https://lengerrong.blogspot.com/2017/03/how-to-config-oracle-java-on-your-ubuntu.html


$ wget http://mirror.apache-kr.org/tomcat/tomcat-9/v9.0.0.M22/bin/apache-tomcat-9.0.0.M22.tar.gz
$ tar xzvf apache-tomcat-9.0.0.M22.tar.gz
$ sudo cp apache-tomcat-9.0.0.M22 /var/lib/tomcat9 -rf
$ cd /var/lib/tomcat9/
$ sudo vim bin/startup.sh
# Better OS/400 detection: see Bugzilla 31132
os400=false
case "`uname`" in
OS400*) os400=true;;
esac

export JAVA_HOME=/usr/lib/jvm/java-8-oracle/
export JRE_HOME=/usr/lib/jvm/java-8-oracle/jre/
export CLASSPATH=$JAVA_HOME/lib:$JRE_HOME/lib:$CLASSPATH
export PATH=$JAVA_HOME/bin:$JRE_HOME/bin:$JAVA_HOME:$PATH
export TOMCAT_HOME=/var/lib/tomcat9



Start tomcat
$ sudo bin/startup.sh

Setup your xfce desktop and vncserver for your VPS

First, let's install a desktop environment.
I chose xfce, something faster.
$ sudo apt-get install xfce4 xfce4-goodies


Second, let's install one vncserver.
$ sudo apt-get install tightvncserver

Let's configure vncserver.
Start the vncserver, and follow the directions to create a password

$ vncserver

You will require a password to access your desktops.

Password:
Verify:
xauth:  file /home/errong_leng/.Xauthority does not exist

New 'X' desktop is vvs:1

Creating default startup script /home/errong_leng/.vnc/xstartup
Starting applications specified in /home/errong_leng/.vnc/xstartup
Log file is /home/errong_leng/.vnc/vvs:1.log

$ cat .vnc/vvs\:1.log
30/06/17 05:51:52 Xvnc version TightVNC-1.3.10
30/06/17 05:51:52 Copyright (C) 2000-2009 TightVNC Group
30/06/17 05:51:52 Copyright (C) 1999 AT&T Laboratories Cambridge
30/06/17 05:51:52 All Rights Reserved.
30/06/17 05:51:52 See http://www.tightvnc.com/ for information on TightVNC
30/06/17 05:51:52 Desktop name 'X' (vvs:1)
30/06/17 05:51:52 Protocol versions supported: 3.3, 3.7, 3.8, 3.7t, 3.8t
30/06/17 05:51:52 Listening for VNC connections on TCP port 5901
Font directory '/usr/share/fonts/X11/75dpi/' not found - ignoring
Font directory '/usr/share/fonts/X11/100dpi/' not found - ignoring
xrdb: No such file or directory
xrdb: can't open file '/home/errong_leng/.Xresources'

As you can see, the TCP port is 5901.
Since I use google cloud compute engine, I have to setup a new firewall rule for this.

Let's verify external IP listen on 5901.
$ nc 146.148.82.191 5901 
RFB 003.008

Great! Everything seems ready for our VNC client to connect.
Open your VNC viewer and connect to the IP of your Compute Engine instance on port 5901.





If still not work, try :
$ sudo iptables -F