How to Lock the Folder/Files in Linux

How to Lock the Folder/Files in Linux?

Here is the Simple method to lock your files,

#Step 1:
first we change permissions for the folder which we want to protect
Code:

$ sudo chmod a-r /path/to/folder

u have to enter your root password, when prompted ,to run this command
also change the /path/to/folder according to your folder location u wish to lock

#Step 2:
now to create the key!
create an empty file ,and name it as u wish but for this HOW-TO i'm using "protector"
Code:

$ touch .PROTECTOR

the file is created in your home/user/ folder
if u cannot see the file, select "show hidden files" from the View menu or press Ctrl+H , now the file should be visible

#Step 3:
open the file using the text editor and enter the following command>
Code:
$ nano ~/.PROTECTOR

And Paste the following 5 lines in the file.
#!/bin/bash
gksu chmod +r /path/to/folder;
nautilus /path/to/folder;
sleep 1;
sudo chmod a-r /path/to/folder

now save and exit.

#Step 4:
now right click the file > select "properties"> select "permissions" tab> check "Allow executing the file as program"
Or you can set execute permission through Terminal

$ chmod +x ~/.PROTECTOR

#Step 5:
*  To create a Launcher in Main Menu, Goto System > Preferences > Main Menu
Click on New Item
Input the correct detail's on dialogue box:
 
Type          : Application
Name         : <Name of the Launcher>
Command    : /home/username/.PROTECTOR
Comment    : Comment to Launcher

And also you can create a launcher on the panel/or Desktop...

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Oracle Password Reset

From Oracle FAQ

ORAPWD is a utility used to create a password file for an Oracle Database.

Run orapwd utility before:

    * setting REMOTE_LOGIN_PASSWORDFILE=EXCLUSIVE|SHARED
    * Grant OSDBA/OSOPER to users

Check V$PWFILE_USERS to see who was granted OSDBA/OSOPER access.
[edit] Examples

Create a new password file:

orapwd file=orapwSID password=oracle entries=5

If the password file already exists:

orapwd file=orapwSID password=oracle entries=5 FORCE=Y

The FORCE parameter is available starting from Oracle 10g.

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