on October 19, 2016 ·
Rocket.Chat is one of the most feature-rich open-source Slack alternatives, featuring group chat, direct messaging, private rooms, desktop notifications, media embedding, link previews, file uploading, voice/video chat, screensharing, and more. There are native applications for Windows, Mac, and Linux, [...]
on October 17, 2016 ·
Apache Cassandra is a NoSQL database intended for storing large amounts of data in a decentralized, highly available cluster. Cassandra database is the right choice when you need scalability and high availability without compromising performance.
on October 1, 2016 ·
When run whois in command line, we sometimes cannot get the expected whois information, but something like below,
$ whois github.com
Whois Server Version 2.0
Domain names in the .com and .net domains can now be registered
with many different competing registrars. Go to http://www.internic.net
on September 12, 2016 ·
Extract and Compress 7z files in command line
7-Zip is a file archiver with a high compression ratio. The file compressed by 7-Zip has an extension ”.7z”. Here is a list of main features of 7-Zip, which is from its official website:
on August 30, 2016 ·
Control groups (a.k.a. cgroups) allow you to allocate resources — such as CPU time, system memory, network bandwidth, or combinations of these resources — among user-defined groups of tasks (processes) running on a system.
You can monitor the cgroups you configure, deny cgroups access [...]
on August 22, 2016 ·
Hyper does one thing: Provide isolated environments (virtual machines) on which portable environments (containers) can be easily scheduled. Hyper uses both shared and dedicated kernels environments, believing it is the right approach to deploy multi-tenant platforms.
on August 16, 2016 ·
The latest Go release, version 1.7, arrives six months after 1.6. Most of its changes are in the implementation of the toolchain, runtime, and libraries. As always, the release maintains the Go 1 promise of compatibility, which expects almost all Go programs to continue to compile and run as before.
on August 13, 2016 ·
When I tried to setup an PPTP/L2TP VPN on one of my CentOS-7 boxes, I googled this script, it works well on my side. Highly recommended if you wanna build your own L2TP VPN server.
on August 10, 2016 ·
Shadowsocks is a fast tunnel proxy that helps bypass firewall limitations. For more details, you can refer to its homepage.
The installation of shadowsocks on CentOS-7 is pretty easy as we just need to run pip, as below:
# pip install shadowsocks
on August 2, 2016 ·
Sometimes I need to kill an established TCP session especially the long time running TCP connections that doing barely nothing, without killing the process that opens it.