Added pre-commit hooks

.pre-commit-config.yaml

@@ -0,0 +1,14 @@
+---
+# See https://pre-commit.com for more information
+# See https://pre-commit.com/hooks.html for more hooks
+
+repos:
+  - repo: https://github.com/pre-commit/pre-commit-hooks
+    rev: v4.2.0
+    hooks:
+      - id: trailing-whitespace
+        args:
+          - --markdown-linebreak-ext=md   # ignore markdown's line break
+      - id: end-of-file-fixer
+      - id: check-yaml
+      - id: check-added-large-files

knowledge base/grep.md

@@ -37,9 +37,9 @@ find . -type f -print0 | xargs -0 -n 1 -P $(nproc) grep 'pattern'
 For simple searches, you might want to use [pdfgrep].
 
 Should you need more advanced grep capabilities not incorporated by pdfgrep, you might want to convert the file to text and search there.  
-You can to this using [`pdftotext`](pdfgrep.md) as shown in this example ([source][stackoverflow answer about how to search contents of multiple pdf files]):
+You can to this using [pdftotext](pdfgrep.md) as shown in this example ([source][stackoverflow answer about how to search contents of multiple pdf files]):
 
-```sh
+```shell
 find /path -name '*.pdf' -exec sh -c 'pdftotext "{}" - | grep --with-filename --label="{}" --color "your pattern"' ';'
 ```
 

knowledge base/jdupes.md

@@ -1,4 +1,4 @@
-# `jdupes`
+# Jdupes
 
 ## TL;DR
 

knowledge base/pdfgrep.md

@@ -0,0 +1 @@
+# PDFGrep