Update cheatsheets

pdfgrep

@@ -0,0 +1,29 @@
+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# pdfgrep
+
+> Search text in PDF files.
+> More information: <https://pdfgrep.org>.
+
+- Find lines that match pattern in a PDF:
+
+`pdfgrep {{pattern}} {{file.pdf}}`
+
+- Include file name and page number for each matched line:
+
+`pdfgrep --with-filename --page-number {{pattern}} {{file.pdf}}`
+
+- Do a case-insensitive search for lines that begin with "foo" and return the first 3 matches:
+
+`pdfgrep --max-count {{3}} --ignore-case {{'^foo'}} {{file.pdf}}`
+
+- Find pattern in files with a `.pdf` extension in the current directory recursively:
+
+`pdfgrep --recursive {{pattern}}`
+
+- Find pattern on files that match a specific glob in the current directory recursively:
+
+`pdfgrep --recursive --include {{'*book.pdf'}} {{pattern}}`