Update cheatsheets

pbmclean

@@ -0,0 +1,21 @@
+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# pbmclean
+
+> Clean up a PBM image by erasing isolated black and white pixels.
+> More information: <https://netpbm.sourceforge.net/doc/pbmclean.html>.
+
+- Clean up a PBM image by erasing isolated black and white pixels:
+
+`pbmclean {{path/to/image.pbm}} > {{path/to/output.pbm}}`
+
+- Clean up only black/white pixels:
+
+`pbmclean -{{black|white}} {{path/to/image.pbm}} > {{path/to/output.pbm}}`
+
+- Specify the minimum number of neighbouring pixels of the same color in order for a pixel not to be considered isolated:
+
+`pbmclean -minneighbours {{3}} {{path/to/image.pbm}} > {{path/to/output.pbm}}`