I’ll step through how to set custom fonts for xterm terminal. My default shell is tcsh.

A hash can be assigned to a key of another hash using hash reference.

If you type echo "Hi\nHow\nHi\nAre\nHi\nYou?\nAre", you will get this in your terminal:

Hi
How
Hi
Are
Hi
You?
Are

Here’s how we can remove the duplicate lines using awk ..

Tiny snippets showing if/else use in awk ..

sed stands for stream editor.

This is the most common way of my sed usage:

echo [SOMETHING] | sed 's/old/NEW/g'

Python snippets to do number representation conversion among binary/decimal/hexadecimal.

This posts explain how the emacs in-built query-replace-regexp command can be used to convert upper-cased strings to lower case.

I have a couple of theme packages installed on my emacs but I would like to assign a default theme.

I set the zenburn theme via a function zenburn. I set the leuven theme via another function leuven. But in my emacs startup I didn’t want to hard-code either of these function and thus arose the need to set a variable to one of these functions.

Some times I would need to define an alias in tcsh which can have optional arguments. tcsh doesn’t seem to support that directly.

Here’s how I solve that problem.

Update (2017/02/23) — Now I use GNU Global with Universal Ctags as back-end to generate the tag files. In emacs, I use the ggtags package – [config].

This post still has value if you are interesting in configuring ctags only.

This posts shows how to set up ctags to parse SystemVerilog code and how to access that tag database in emacs.