Disable IPv6
To disable IPv6, edit vi /etc/sysctl.conf Add following net.ipv6.conf.all.disable_ipv6 = 1 net.ipv6.conf.default.disable_ipv6 = 1 net.ipv6.conf.lo.disable_ipv6 = 1 run sysctl -p IPv6 config…
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vim E509: Cannot create backup file (add ! to override)
When i save file on a server in vim, i get error “FILE_NAME.EXTN” E509: Cannot create backup file (add ! to override)…
vim
Vim 8 goes Visual Mode on right click vim E509: Cannot create backup file (add ! to override) Install vim from source…
Vim 8 goes Visual Mode on right click
Vim 8 shipped with Fedora 25 and Debian 9 when you mouse right click or use middle button to insert text to…
apt error after MariaDB to MySQL change
I have install MariaDB on a Ubuntu 16.04 server. Then installed Virtualmin, that require MySQL, so it removed MariaDB and installed MySQL,…
SASL authentication no mechanism available
When sending email from postfix mail sever that use mailgun for relaying mails, i get error Jan 4 03:16:06 serverok-vm postfix/qmgr[22652]: 795731A8D:…
apt show
apt show command shows information about a package. root@ok-vm:~# apt show apache2 Package: apache2 Version: 2.4.18-2ubuntu3.5 Priority: optional Section: web Origin: Ubuntu…
apt policy
apt policy command show information about a package. root@ok-vm:~# apt policy apache2 apache2: Installed: 2.4.18-2ubuntu3.5 Candidate: 2.4.18-2ubuntu3.5 Version table: *** 2.4.18-2ubuntu3.5 500…
geoip
PHP Script to Find GeoIP info Install GeoIP Apache Module in CentOS Install GeoIP PHP Module in Ubuntu Country Blocking with nginx…
PHP Script to Find GeoIP info
If you have PHP GeoIP module installed, you can use the following PHP script to find GeoIP info.
Virtualmin Hosting Control Panel
To install Virtualmin on Ubuntu, run To install with Nginx, run After installation, you can login to virtualmin at: Auto Script install…