Dev {Tricks}

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Convert your old router to wifi repeater (Range Extender)

  • How to use old router as a repeater.
  • How to extend wifi range with old (second) router.
  • How to connect two router in one home network.
  • How to convert tp link router to repeater.

The same method, you can apply to any other wifi router.

All steps are in OLD router. You just have to connect old router to new with cable, and old router to PC with cable.

At first, you may have to reset the router to its default state, if required.

  • Plug in the router
  • Take a pin
  • Put the pin in the tiny hole behind the router
  • Press and hold for 10 seconds (all signal light will be on at a time)

1. Login to your router using default username and password.

http://192.168.0.1/

By default TP-Link user and password is “admin”

2. Go to Wireless > Wireless Settings and name your Wireless Network.

  • Enable WDS Bridging
  • Servey for your primary device
  • A new window will be opened and you can find your primary device.
  • Connect it.
  • It will fill up some fields automatically.
  • Now seclect Key type:
    WPA-PSK/WPA2-PSK
  • Enter your password of primary device.
  • Save

3. Then go to Wireless > Wireless Security

  • Check this option and enter password for new extender.
    WPA/WPA2 – Personal(Recommended)
  • Save.

4. Now go to DHCP > DHCP Settings and

  • Disable DHCP Server.
  • Save

5. Now click on Network > LAN and change the IP Address to your choice.

  • For example: 192.168.0.9
  • Save
  • Modification of IP address or Subnet Mask will result in the rebooting of the Device, OK?
  • It will reboot your device

Done!

 

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How to change the root password

  • Resetting the Root Password
  • How to Change a Password in Linux
  • How to Reset or Change the Root Password in Linux
  • How to change root password in Ubuntu Linux
  • How to Reset the root Password

1. Login to your server using existing root password.

2. After login you can change the root password with below command.

passwd root

That’s aLL!

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Delete OJS article as required

  • Is there some way to delete all unassigned articles

You can use tools/deleteSubmissions.php to delete submissions by ID. This is something you’ll need to do from the command line. You can run…

php tools/deleteSubmissions.php 12345

…where 12345 is a submission ID.

 

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How to enable and disable dangerous php functions | CWP

How to disable dangerous php functions

PHP switcher :

echo "disable_functions = exec, system, popen, proc_open, shell_exec, passthru, show_source" > /usr/local/php/php.d/disabled_function.ini

PHP-CGI selector :

echo "disable_functions = exec, system, popen, proc_open, shell_exec, passthru, show_source" > /opt/alt/php53/usr/php/php.d/disabled_function.ini

echo "disable_functions = exec, system, popen, proc_open, shell_exec, passthru, show_source" > /opt/alt/php54/usr/php/php.d/disabled_function.ini

echo "disable_functions = exec, system, popen, proc_open, shell_exec, passthru, show_source" > /opt/alt/php55/usr/php/php.d/disabled_function.ini

echo "disable_functions = exec, system, popen, proc_open, shell_exec, passthru, show_source" > /opt/alt/php56/usr/php/php.d/disabled_function.ini

echo "disable_functions = exec, system, popen, proc_open, shell_exec, passthru, show_source" > /opt/alt/php70/usr/php/php.d/disabled_function.ini

echo "disable_functions = exec, system, popen, proc_open, shell_exec, passthru, show_source" > /opt/alt/php71/usr/php/php.d/disabled_function.ini

echo "disable_functions = exec, system, popen, proc_open, shell_exec, passthru, show_source" > /opt/alt/php72/usr/php/php.d/disabled_function.ini

echo "disable_functions = exec, system, popen, proc_open, shell_exec, passthru, show_source" > /opt/alt/php73/usr/php/php.d/disabled_function.ini

echo "disable_functions = exec, system, popen, proc_open, shell_exec, passthru, show_source" > /opt/alt/php74/usr/php/php.d/disabled_function.ini

echo "disable_functions = exec, system, popen, proc_open, shell_exec, passthru, show_source" > /opt/alt/php80/usr/php/php.d/disabled_function.ini

PHP_FPM Selector :
** Don’t forget to restart php-fpm after changes

echo "disable_functions = exec, system, popen, proc_open, shell_exec, passthru, show_source" > /opt/alt/php-fpm53/usr/php/php.d/disabled_function.ini && service php-fpm53 restart

echo "disable_functions = exec, system, popen, proc_open, shell_exec, passthru, show_source" > /opt/alt/php-fpm54/usr/php/php.d/disabled_function.ini && service php-fpm54 restart

echo "disable_functions = exec, system, popen, proc_open, shell_exec, passthru, show_source" > /opt/alt/php-fpm55/usr/php/php.d/disabled_function.ini && service php-fpm55 restart

echo "disable_functions = exec, system, popen, proc_open, shell_exec, passthru, show_source" > /opt/alt/php-fpm56/usr/php/php.d/disabled_function.ini && service php-fpm56 restart

echo "disable_functions = exec, system, popen, proc_open, shell_exec, passthru, show_source" > /opt/alt/php-fpm70/usr/php/php.d/disabled_function.ini && service php-fpm70 restart

echo "disable_functions = exec, system, popen, proc_open, shell_exec, passthru, show_source" > /opt/alt/php-fpm71/usr/php/php.d/disabled_function.ini && service php-fpm71 restart

echo "disable_functions = exec, system, popen, proc_open, shell_exec, passthru, show_source" > /opt/alt/php-fpm72/usr/php/php.d/disabled_function.ini && service php-fpm72 restart

echo "disable_functions = exec, system, popen, proc_open, shell_exec, passthru, show_source" > /opt/alt/php-fpm73/usr/php/php.d/disabled_function.ini && service php-fpm73 restart

echo "disable_functions = exec, system, popen, proc_open, shell_exec, passthru, show_source" > /opt/alt/php-fpm74/usr/php/php.d/disabled_function.ini && service php-fpm74 restart

echo "disable_functions = exec, system, popen, proc_open, shell_exec, passthru, show_source" > /opt/alt/php-fpm80/usr/php/php.d/disabled_function.ini && service php-fpm80 restart

How to enable back the dangerous php functions

To enable it back, simply delete disabled_function.ini file for the PHP version you want and restart apache/php-fpm.

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Linux edquota Command Examples to Edit User and Group File Quota

By default, edquota will open up the quota file in an Vi editor, from where you can change the values.

Edit User Quota

edquota -u username

This will edit the quota for user “username”.

Edit Group Quota

To edit group quota, use -g.

edquota -g groupname

This will edit the quota for group “groupname”