SSH key (passwordless)

March 21st, 2019 by ayad

$ ssh-keygen -t rsa # press enter on all prompts
$ ssh-copy-id -i ~/.ssh/id_rsa[IP address]

the name cannot be matched to a name in the address list

April 6th, 2018 by ayad

if you received this error. you need to update your outlook and reboot your computer. i have encountered this issue for few days with exchange 2013 and Microsoft outlook 2016 . configuring email as exchange.

i used this outlook update    https://www.microsoft.com/en-us/download/confirmation.aspx?id=54546

then the issue is fixed.


Change a user name and email address in Office 365

May 22nd, 2017 by ayad


Please refer to this article




package account without emails and public_html contents – cPanel

May 9th, 2017 by ayad

/scripts/pkgacct –skiphomedir USER


You must enable the PECL memcached or memcache extension to use memcache.inc. cpanel

May 5th, 2017 by ayad



yum install ea4-experimental
yum install ea-php56-php-memcache
yum install ea-php56-php-memcached
yum install ea-memcached

That should fix the issue. i have tried it and fixed my issue. 


queueprocd isn’t running? at /usr/local/cpanel/Cpanel/TaskQueue/Manager.pm line 150

May 4th, 2017 by ayad

The issue can be fix by run the following command





#1273 – Unknown collation: ‘utf8mb4_unicode_520_ci’

May 4th, 2017 by ayad

1) Click the “Export” tab for the database

2) Click the “Custom” radio button

3) Go the section titled “Format-specific options” and change the dropdown for “Database system or older MySQL server to maximize output compatibility with:” from NONE to MYSQL40.

4) Scroll to the bottom and click “GO”.

I’m not certain if doing this causes any data loss, however in the one time I’ve tried it I did not notice any. Neither did anyone who responded in the forums linked to above.




Restore Database Plesk Oynx – Linux command line

May 4th, 2017 by ayad

1- plesk db  databasename < databasename.sql


2- mysql -uadmin -p”`cat /etc/psa/.psa.shadow`” databasename < databasename.sql

Find and Replace in Linux

May 4th, 2017 by ayad

sed -i 's/original/new/g' file.txt

  • sed = Stream EDitor
  • -i = in-place (i.e. save back to the original file)
  • The command string:
    • s = the substitute command
    • original = a regular expression describing the word to replace (or just the word itself)
    • new = the text to replace it with
    • g = global (i.e. replace all and not just the first occurrence)
  • file.txt = the file name

Reconfigure Nginx in Plesk Onyx Centos 7

April 10th, 2017 by ayad

Run the following command


/usr/local/psa/admin/bin/httpdmng –reconfigure-all