FreeBSD Unix Find Out Which Programs Are Listening On a Given Port Number

I ‘m a new FreeBSD Unix system user. How can I find out the process/programs names listing on a certain port on a FreeBSD Unix systems using command line? How do I lookup the process…

How To Mount a Remote Directory With SSHFS on a Linux

H ow can I mount a remote directory with ssh on a Linux bases system? How do I use SSHFS to mount remote file systems over SSH on a Ubuntu or Debian/RHEL/CentOS/Arch Linux system?  …

RHEL / CentOS Linux 7 Enable Ping Access In Docker Container

I’m using RHEL 7.1-4 container on a RHEL /CentOS Linux 7.x server. However, I’m unable to ping external site/IP address using the ping command. I’m getting the following error on screen: ping: Operation not permitted…

How To Find My Public IP Address From Command Line On a Linux

H ow do I find out my public IP address on the Linux and OS X Unix command line to use with my own bash shell script without using third party web site? Is there…

How To: Restart Apple Mac OS X Airport Networking From the Bash Terminal

H ow do I enable and/or disable networking (AirPort) Ethernet and Wireless from the bash command Line in Apple Mac OS X? How can I restart Wi-Fi via command Line in OS X?   You…

How To Install Speedtest-cli On a CentOS / RHEL / Scientific / Fedora Linux To Check Internet Speed

I do not want to use Adobe flash based speed testing site due to security concern on my desktop. How do I install Speedtest-cli on a CentOS Linux or Fedora Linux or Red Hat Enterise…

How To Use apt-get with IPv4 or IPv6 Transport (address) on a Ubuntu or Debian or Mint Linux

I t is possible that I can forces my apt-get command command only use IPv6 or Ipv4 transport on a Debian or Ubuntu Linux server?   Yes. You need to configure the acquire group option…

How To SSH Run Multiple Command On Remote Machine And Exit Safely

I have a backup sync program on local server. I have an ssh password less login set up, and I can run commands on an external server in bash script doing: ssh root@server2  sync; sync;…

Fedora Linux – How to Use dnf Command With A Proxy Server

My Fedora Linux 23 workstation based laptop can only be accessed through our corporate proxy servers. How do I access and use dnf command with a web proxy server on a Fedora Linux? How do…

How To Setup OpenVPN Server In 5 Minutes on Ubuntu Server

I am a new Ubuntu Linux server user. How do I setup an OpenVPN Server on Ubuntu Linux version 14.04 or 16.04 LTS server to shield my browsing activity from bad guys on public Wi-Fi,…