How can I find out my public IP address using the command line?
dig +short myip.opendns.com @resolver1.opendns.com Reference: https://www.cyberciti.biz/faq/how-to-find-my-public-ip-address-from-command-line-on-a-linux/
Operating Systems
How to sort files in Linux in date order
Use the following flags with ‘ls’ to control the directory date sort order: ls -lat -l is for long style -a is for all (including
How to turn off or on a Linux service from starting up from the command line
Use this command: # chkconfig service_name on or off
Bluetooth devices (mouse / headphones) not reconnecting automatically
You might end up in a situation where your Bluetooth devices do not re-connect automatically. The solution is: 1) apt remove blueberry -y && apt
What is my IP address? How can I determine my IP address reliably from the command line using Linux?
Introduction This article explains how to get the IP address of a computer as viewed from the outside. The reason why you might want to
Where is killall on CentOS?
Help! My CentOS server is running away from me and I can’t find killall! Where is killall? Use pkill process instead, e.g. pkill apache2 Reference:
Bind fails but no log file that show anything
Your named server suddenly stops working. You go into a mild panic because restarting the service doesn’t show you where it’s failing. It’s as if
Bind fails to start open: /etc/named.conf: permission denied
The log file shows: Mar 14 10:49:10 hostname named[30884]: using 4 UDP listeners per interface Mar 14 10:49:10 hostname named[30884]: using up to 21000 sockets Mar 14
How to vacuum journalctl
How to free up space if your Linux journal (combined log file) is taking up a lot of space On some systems /var/log might be
How to sort a Linux directory by date
Use the following flags to order a directory listing by date in forward order: ls -lat To show a directory listing in reverse order, use