book-review 1 cheatsheet 2 command-line 1 corner case 1 curated-resources 2 debugging 1 ebook 2 ebook-generation 1 epub 1 examples 2 fixed-string 1 gnu-grep 1 gui 1 intermediate 1 javascript 1 linux 1 markdown 1 maths 1 multiline 1 pandoc 1 pdf 1 python 5 re-module 2 regex-module 1 regular-expressions 4 ripgrep 2 shell scripting 1 substitution 1 tutorial 1 wxpython 1 xelatex 1