Screenshot missing in CentOS 6.6

I have made CentOS 6.6 Install but suddenly I have seen that screen-shot I'm unable to take.

to fix it you have to install

yum  install gnome-utils

Restore Permission on Home directory

This Post I am taking from askubuntu , not answered by me but posting in my blog so that it can help others in future.

http://askubuntu.com/questions/567599/emsudo-chmod-x-caused-me-cannot-open-anything

Note: This is the way like doing as undoing what you have done.

sudo chmod -x * -R

find . -type d

You will get an error like below 

find: 'xxxxx': Permission denied 

then do as

find . -type d -exec chmod +x {} \;

Fix conky hiding

I have installed and got some conky script but after system starting its hiding automatically and the only way I can see it while shutting down.

So I have googled and got some solution which can fix my problem.

Open your conkyrc file which is a hidden file  in home directory with

$ vim  .conkyrc

or

$ vim ~/.conkyrc

Find the area of below lines and make the configuration as I have mentioned.

own_window yes
own_window_class Conky
own_window_type normal
own_window_hints undecorated,below,sticky,skip_taskbar,skip_pager 
own_window_transparent yes

Then save and exit from your conkyrc file.

Then in we have to reload the conky with updated configuration , so all you have to do is kill the conky and then start it again.

so In your terminal as root user do as

# killall conky & conky

or

$ su -c " killall conky & conky"

 
I hope that will help you.

See Open Ports in a Linux PC ( Localhost/Remote Machine)

I am writing a small post that will help you just to see what ports are open in  a particular remote/local machine.

we are going to use tool name as nc.

To install it , open your terminal and type as

 # yum install nc

                              After installing , you can use it with

nc -zv xxx.xxx.xxx.xxx <Port>

                                           for example:

nc -zv 192.168.1.100 80

                                          if you want to do that for 2-3 ports

nc -zv 192.168.1.100 80 8009

                                            if you want to do scanning for range of ports

nc -zv 192,168.1.100 80-8080

hope it will help you.

THANK YOU

Tutorial on .htpasswd and .htaccess with apache(httpd) in Linux

If there is a situation that have to dealt with like a public website but with some secret information.
How can we protect the information ? .

We can use .htpasswd and .htaccess in that time.

How  ? Lets see................

Open your terminal and type as

                        vim /etc/httpd/conf/httpd.conf

and find line no : 334 to 338. This is the area of httpd.conf that dealt with .htaccess

    334 # AllowOverride controls what directives may be placed in .htaccess files.
    335 # It can be "All", "None", or any combination of the keywords:
    336 #   Options FileInfo AuthConfig Limit
    337 #
    338     AllowOverride AuthConfig
 

Now look at line no 338 , before modifying it will look like

                     AllowOverride None

You have to modify it to

                     AllowOverride AuthConfig

Now make sure that if you have some website and VirtualHost configuration of that website is successfully completed.



For my case that website is website1.com and now open your terminal and type as

                   #  vim /var/www/html/website1/protected/.htaccess

Then Write below lines

                   AuthUserFile /var/www/html/website1/protected/.htpasswd
                   AuthType basic
                   AuthName " My Personal Files"
                   Require valid-user

So what they means , here we go.....

AuthUserFile  : This is the path of .htpasswd file. Make sure you are giving proper path. If you give wrong path , it wont allow to login. Dont panic we are admins , we can make it solve by giving proper path.

AuthType : The AuthType directive selects that method that is used to authenticate the user. The most common method is Basic, and this is the method implemented by mod_auth_basic. It is important to be aware, however, that Basic authentication sends the password from the client to the server unencrypted. This method should therefore not be used for highly sensitive data, unless accompanied by mod_ssl. Apache supports one other authentication method: AuthType Digest. This method is implemented by mod_auth_digest and was intended to be more secure. This is no longer the case and the connection should be encrypted with mod_ssl instead.

AuthName : So AuthName can be anything , its the name get displayed on that password window.

Require : So this is to define to whom we have to allow to access.

For Example :

Require valid-user  # means only the valid user who are in .htpasswd file
Require raja raaz # means among the users of .htpasswd file allow only raja and raaz

But

Require valid-user raja is wrong way of usage because if you give so it doesnt make any sense.

I hope that explanation is fine. Now save and close that file and now we are going to create users for it.

# htpasswd -c /var/www/html/website1/protected/.htpasswd raja  Password

Location of htpasswd file is completely upto you but .htaccess must be inside of protected directory which intended to be protected.

To add one more user you can use this command
# htpasswd  /var/www/html/website1/protected/.htpasswd raaz  Password

If you mentioned -c here then it will overwrite old .htpasswd file. So dont  mention -c while adding one more user.
Now raja is username and Password is password to access. This will store in  /var/www/html/website1/protected/.htpasswd location. After you added user.

You can try. Just try to access  website1.com/protected in your browser and it will ask you username and password and only allowed are able to access those content.

Hope it helps.

In case of any queries please let me know.


References:

http://www.colostate.edu/~ric/htpass.html
http://www.anchor.com.au/hosting/support/password_protection_using_htaccess
http://www.seas.upenn.edu/cets/answers/auth-htpasswd.html
http://httpd.apache.org/docs/2.2/howto/auth.html

 Thank you

Make the system Time Zone persistent across REBOOT in Linux

Hi Guys!
Are tou tired of fixing the Time Zone across reboot in your Linux box..?  Here are three simple steps for you to fix the issue.
In this example we are fixing the time zone to IST. Similarly you can set it to any Time Zone of your choice.

Step:1 Set the hardware clock to IST time zone
# ln -sf /usr/share/zoneinfo/Asia/Calcutta /etc/localtime

Step:2 Verify the hardware clock is set to IST properly
# hwclock --show

Step:3 Verify the date and time also if necessary
# date

What if the system time is wrong..? Then follow Steps 4 to 7

Step;4 Correct system time
# date -s "Tue 26 Apr 2016 19:36:00"

Step:5 Sync system time to hardware clock time
# hwclock --systohc --localtime

Step:6 Verify hardware clock time
# hwclock --show

Step:7 Verify system time
# date

Result of Step:6 & 7 must be same.

Thank You!

Fixing SELECT command denied to user 'user'@'x' for table proc

Open your hibernate.cfg file  and append this below string to your connection string.

                                Use Procedure Bodies=false;