If you want to see duplicated column values in DB table use next:
select
doc_id,
count(1)
from doc_pictures
group by doc_id
having count(1) > 1
Thanx to http://stackoverflow.com/a/19635626
You may know about JRebel project. It’s very helpful for development in java world.
The following steps describe how to use JRebel for Web application:
1. Install JRebel plugin for your IDE.
2. Create file descriptor rebel.xml with JRebel plugin in your IDE in WEB-INF\classes folder like:
<?xml version="1.0" encoding="UTF-8"?>
<application
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://www.zeroturnaround.com"
xsi:schemaLocation="http://www.zeroturnaround.com
http://www.zeroturnaround.com/alderaan/rebel-2_0.xsd">
<classpath>
<dir name="D:/project/idea/out/production/projectUI">
</dir>
</classpath>
<web>
<link target="/">
<dir name="D:/project/src/projectUI/src/main/webapp">
</dir>
</link>
</web>
</application>
3. Add the argument to JBoss AS start script:
-javaagent:C:/Users/UserName/.IntelliJIdea14/config/plugins/jr-ide-idea/lib/jrebel/jrebel.jar
Here is the path to jrebel.jar file placed after installation.
4. Deploy your application on JBoss.
5. Change some code and make (recompile) the project.
6. See the changes! Profit!
Thanx, zeroturnaround!
It’s too disturbed to run ‘/etc/init.d/vboxdrv setup’ command after kernel update each time. But how can it be fixed?
Fortunately, way is:
sudo apt-get install linux-headers-`uname -r`
sudo dpkg-reconfigure virtualbox-dkms
sudo modprobe vboxdrv
So, DKMS package keeps track of Linux kernel changes and recompiles the vboxdrv kernel module if necessary.
Thanx to http://askubuntu.com/a/220778 a lot!
It’s often need to restart, shutsdown, logoff Windows from command line. For example, if you connect to OS via remote desktop protocol you can’t restart/shutdown it from UI.
In such case you can use next:
shutdown -r
restarts os
shutdown -s
shutdown os
shutdown -l
logoff os
shutdown -t xx
where xx is number of seconds to wait till shutdown/restart/logoff
shutdown -i
gives you a dialog box to fill in what function you want to use
shutdown -a
aborts the previous shutdown command....very handy!
Additional options:
-f
force the selected action
Thanx to http://stackoverflow.com/a/162305
