Update cheatsheets

tldr/i3-nagbar

@@ -0,0 +1,33 @@
+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# i3-nagbar
+
+> Display an error/warning in a bar on top of a screen.
+> More information: <https://manned.org/i3-nagbar>.
+
+- Display an error:
+
+`i3-nagbar {{[-m|--message]}} "{{error message}}"`
+
+- Display a warning:
+
+`i3-nagbar {{[-t|--type]}} warning {{[-m|--message]}} "{{warning message}}"`
+
+- Use the specified font:
+
+`i3-nagbar {{[-f|--font]}} "{{pango:monospace bold 9}}" {{[-m|--message]}} "{{error message}}"`
+
+- Create a button and run a command in a terminal on click:
+
+`i3-nagbar {{[-b|--button]}} "{{button text}}" {{command}} {{[-m|--message]}} "{{error message}}"`
+
+- Create a button and run a command on click:
+
+`i3-nagbar {{[-B|--button-no-terminal]}} "{{button text}}" {{command}} {{[-m|--message]}} "{{error message}}"`
+
+- Always open `i3-nagbar` on the primary monitor (default: focused monitor):
+
+`i3-nagbar {{[-pm|--primary --message]}} "{{error message}}"`

tldr/pdf-parser

@@ -12,9 +12,9 @@ source: https://github.com/tldr-pages/tldr.git
 
 `pdf-parser {{[-a|--stats]}} {{path/to/file.pdf}}`
 
-- Display objects of type `/Font` in a PDF file:
+- Display objects of a specific type (`/Font`, `/URI`, ...) in a PDF file:
 
-`pdf-parser {{[-t|--type]}} {{/Font}} {{path/to/file.pdf}}`
+`pdf-parser {{[-t|--type]}} {{/object_type}} {{path/to/file.pdf}}`
 
 - Search for strings in indirect objects: