Update cheatsheets

bmaptool

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+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# bmaptool
+
+> Create or copy block maps intelligently (designed to be faster than `cp` or `dd`).
+> More information: <https://source.tizen.org/documentation/reference/bmaptool>.
+
+- [o]utput a blockmap file from image file:
+
+`bmaptool create -o {{blockmap.bmap}} {{source.img}}`
+
+- Copy an image file into sdb:
+
+`bmaptool copy --bmap {{blockmap.bmap}} {{source.img}} {{/dev/sdb}}`
+
+- Copy a compressed image file into sdb:
+
+`bmaptool copy --bmap {{blockmap.bmap}} {{source.img.gz}} {{/dev/sdb}}`
+
+- Copy an image file into sdb without using a blockmap:
+
+`bmaptool copy --nobmap {{source.img}} {{/dev/sdb}}`