Install MongoDB 4.0 on CentOS 7
To install MongoDB 4.0 (for other versions, see release note) on CentOS 7, create file vi /etc/yum.repos.d/mongodb-org-4.0.repo Add content [mongodb-org-4.0] name=MongoDB Repository…
Linux
List SSH keys
To list all SSH keys used by ssh agent on your system, run ssh-add -l Example To add all available ssh keys…
SSH Agent forwarding with tmux
Most of the time i connect to remote virtial machine to SSH to other servers. This way i will always have a…
Install OpenVPN Access Server
OpenVPN Access Server is paid version of OpenVPN with easy to use control panel. You can see license pricing at https://openvpn.net/access-server/pricing/ First…
awk
cut How to cut lines separated by multiple spaces? How to get list of User-Agent from access log To list all kernels…
Upgrade Debian 8 Jessie To Debian 9 Stretch
Upgrading server on a remote location is not safe unless you have KVM access. I did many Debian 8 to Debian 9…
Install Skype on Ubuntu
Skype public key is not available To install Skype on Ubuntu 20.04 (this work with other Ubuntu/Debian versions), run curl https://repo.skype.com/data/SKYPE-GPG-KEY |…
Manage Linux Software Raid with mdadm
To assemble a software raid, run Auto assemble Get details about the raid
bluetooth
To list bluetooth devices on Ubuntu, run hcitool dev To list usb devices, run boby@sok-01:~$ lsusb Bus 006 Device 001: ID 1d6b:0003…
fuser
To instal fuser on CentOS 7, run yum install psmisc -y To see which program use a port, run fuser 80/tcp To…