ohjho’s gists

ohjho / GmailThis.js

Created April 13, 2018 03:30

Gmail This Bookmarklet (https://www.lifewire.com/how-to-add-a-gmail-this-bookmarklet-to-your-browser-1172047)

javascript:(function(){popw='';Q='';d=document;w=window;if(d.selection){Q=d.selection.createRange().text;}else if(w.getSelection){Q=w.getSelection();}else if(d.getSelection){Q=d.getSelection();}popw=w.open('http://mail.google.com/mail/s?view=cm&fs=1&tf=1&to=&su='+encodeURIComponent(d.title)+'&body='+encodeURIComponent(Q)+escape('%5Cn%5Cn')+encodeURIComponent(d.location)+'&zx=RANDOMCRAP&shva=1&disablechatbrowsercheck=1&ui=1','gmailForm','scrollbars=yes,width=680,height=575,top=175,left=75,status=no,resizable=yes');if(!d.all)setTimeout(function(){popw.focus();},50);})();

ohjho / remove_ipynb_checkpoints.sh

Last active January 1, 2025 19:09

How to remove .ipynb_checkpoints from Git Repo

	# to remove the file on git without deleting from local
	# use -> git rm --cached
	find . -name .ipynb_checkpoints -print0 \| xargs -0 git rm -r --ignore-unmatch
	echo .ipynb_checkpoints >> .gitignore

ohjho / git_blob_obj.sh

Last active December 11, 2018 07:10

shell script to show all blob objects in your git repo sorted from smallest to largest. For mac users, please comment out the last line. To run, place this in your git directory and run `sh git_blob_obj.sh`

	git rev-list --objects --all \
	\| git cat-file --batch-check='%(objecttype) %(objectname) %(objectsize) %(rest)' \
	\| sed -n 's/^blob //p' \
	\| sort --numeric-sort --key=2 \
	\| cut -c 1-12,41- \
	\| $(command -v gnumfmt \|\| echo numfmt) --field=2 --to=iec-i --suffix=B --padding=7 --round=nearest

ohjho / imaginemagick_color_convert.sh

Last active March 6, 2019 04:29

-fill is the new color and -opaque is the old color; you can use https://imagecolorpicker.com/ to identify the color in the image

convert original.jpg -fuzz 15% -fill "#84BE6A" -opaque "#d89060" new.jpg

ohjho / imaginemagick_crop.sh

Created March 29, 2019 00:52

how to crop an image with imaginemagick: -crop {w}x{h}+{x}+{y}

convert foo.png -crop 640x480+50+100 out.png

ohjho / imgmagick_batch_resize

Created April 23, 2019 02:50

imgmagick resize batch sub directory (replace . with your dir path)

	find . -type f -iname "*.jpg" -exec identify -format '%w %h %i\n' {} \; \|
	awk '$1 > 1200 \|\| $2 > 1200 {sub(/^[^ ]* [^ ]* /, ""); print}' \|
	tr '\n' '\0' \|
	xargs -0 mogrify -resize '1200x1200'

ohjho / grep_string_in_dir.sh

Last active October 15, 2019 03:32

use grep to search for files containing a given string

	grep -R --exclude-dir=node_modules 'some pattern' /path/to/search

	grep -R --exclude-dir={node_modules,.git} 'some pattern' /path/to/search

ohjho / ffmpeg_cheatsheet.md

Last active October 10, 2024 19:44

table-of-content

Dealing with Files
use xargs to pipe each line into a command

examples

ohjho / Python+VirtualEnvs.md

Last active November 14, 2025 15:24

Python Versions + Virtual Environments Tips and Tricks

	find . -type f -iname "*.jpg" -exec identify -format '%w %h %i\n' {} \; \|
	awk '$1 > 1200 \|\| $2 > 1200 {sub(/^[^ ]* [^ ]* /, ""); print}' \|
	tr '\n' '\0' \|
	xargs -0 mogrify -resize '1200x1200'

John Ho ohjho

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