Update cheatsheets

pbmpage

@@ -0,0 +1,21 @@
+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# pbmpage
+
+> Generate a test pattern for printing.
+> More information: <https://netpbm.sourceforge.net/doc/pbmpage.html>.
+
+- Generate a test pattern for printing onto US standard paper:
+
+`pbmpage > {{path/to/file.pbm}}`
+
+- Generate a test pattern for printing onto A4 paper:
+
+`pbmpage -a4 > {{path/to/file.pbm}}`
+
+- Specify the pattern to use:
+
+`pbmpage {{1|2|3}} > {{path/to/file.pbm}}`