I was working on a tcsh script that did some cool stuff. But if a user ran that script not knowing the true impact of the script, it could make some bad irreversible changes.
While I could simply echo a warning statement and put a sleep 10, I wanted the wait time to be shown live.
I was reviewing what was occupying the maximum disk space using the
ncdu command line utility. One of the top candidates was the
git clone of org-mode. It was using 2.4GB of my disk space!
Surprised by that, I started looking around1 if there was a way to
optimize the cloned git repositories i.e. the .git/ directories. And
sure enough, there was a way.
I often need to check if a particular executable is present in the PATH before I can proceed with what I am doing in a shell script. Also I need to work with both tcsh and bash scripts. Below presents the different solutions that have worked for these shell scripts for me.
It is quite common knowledge that the basename command is used to get just the file name without its full path.
> basename /home/$USER/file.txt
file.txt
But what wasn’t common knowledge, at least to me, was that basename also accepts a second argument ..
Using emacsclient instead of the emacs binary is a very useful technique to prevent loading emacs from scratch each time you open a new file. That technique is useful on Windows too. But for this to work on Windows, we need some more elisp and Windows environment variable configuration than just the below code,
(require 'server)
;; Start a server if (server-running-p) does not return t (e.g. if it
;; returns nil or :other)
(or (eq (server-running-p) t)
(server-start))While generating a simple favicon for this blog, I went through a little exercise on how to generate a favicon with transparent background. I did not want the favicon with square block background which runs a risk of not blending well with the browser tab background as seen below:
I have been toying with the idea to use hugo as my static web site generator for few weeks now. And then the news of its version 0.17 release are announced, and hugo shows up on Hacker News once again.
modi/ediff-dwim to the latest revision in my config.In almost all of my ediff use cases, I would have windows open
side-by-side in a frame, and then I would want to do a diff between
the two using ediff-buffers.
But emacs doesn’t know that I obviously want to diff those two
side-by-side buffers! So it always asks me to select the buffers to be
diffed. The same problem is when using ediff-files too.
So I came up with the following helper function to pick the correct
ediff command.
The setup of outshine package for emacs requires the user to set the
variable outline-minor-mode-prefix to "\M-#" before the outline-mode
package (that ships with emacs) is loaded.
The best way to do this is via the Customize interface in emacs.
So I did M-x customize and set that variable’s value to "\M-#" and restarted
emacs and that worked.
But then I was surprised to see that value being saved in the custom.el as
'(outline-minor-mode-prefix "\243").
In Magit buffer *magit: ..*,
xorigin/master