Tools on Ken Huang

An Online Python re.findall Service

whatacold@gmail.com (Ken Huang) — Wed, 21 Oct 2020 22:51:00 +0800

As a programmer, I know that grep, sed and awk are powerful for processing text, but they sometimes aren't that straight-forward for specific tasks, as I need to think about how to filter the lines and the columns out.

So I wonder if there is a handy way to do these tasks?

After using it for a while, I think using regex directly can help, so I launched a re.findall service building on top of Python re.findall API.

Manage SSH Connections with ~/.ssh/config

whatacold@gmail.com (Ken Huang) — Sun, 22 Dec 2019 18:52:00 +0800

I used to manage SSH connection with such GUI apps as MobaXterm, when I wrote code on Windows at work. As I changed my workflow to use a tiling window manager in a VirtualBox guest OS, I continued to improve my way of managing SSH connections, which I want to share here if you don't know yet.

At first, I baked a helper Python script, which I named as qssh for "quick ssh", to help me assemble ssh arguments for me(such as username, Ip, port, etc.), so that I can easily access a host by giving it only one argument, e.g. qssh foo.

How to Change Web Page Titles Easily

whatacold@gmail.com (Ken Huang) — Sun, 18 Aug 2019 14:57:00 +0800

There are times that I need to open many web pages of some specific websites within a browser, and there are so many tabs that I can't efficiently access one of them, as their favicons are all the same.

So I tried to find a way to rename their titles, preferably in a lightweight way, so that I can spot them quickly with my eyes.

The first thought came into my mind was to find some browser extensions to do the job. It was easy to install one with no time. But I was not very happy with the experience. It seems that it keeps the rule of renaming titles based on the URL so that the title will always be renamed if I refreshing it, which is not what I want. I'd rather want to do it in an ad-hoc way.

ER Diagrams in Plain Text

whatacold@gmail.com (Ken Huang) — Sat, 06 Jul 2019 11:59:00 +0800

If you ever wonder how to plot ER diagrams in plain text, you may have already heard of erd. It's a cool command line program written by Andrew Gallant in Haskell, to "compile" plain text files into nicely looking images, leveraging the power of GraphViz.

I've used erd for some time, it's cool and the syntax is quite simple. It's also quite simple to install it on Linux, just install GraphViz and erd itself, by following the instructions in the README page.