Update cheatsheets

hexdump

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+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# hexdump
+
+> An ASCII, decimal, hexadecimal, octal dump.
+> More information: <https://manned.org/hexdump>.
+
+- Print the hexadecimal representation of a file, replacing duplicate lines by '*':
+
+`hexdump {{path/to/file}}`
+
+- Display the input offset in hexadecimal and its ASCII representation in two columns:
+
+`hexdump -C {{path/to/file}}`
+
+- Display the hexadecimal representation of a file, but interpret only n bytes of the input:
+
+`hexdump -C -n{{number_of_bytes}} {{path/to/file}}`
+
+- Don't replace duplicate lines with '*':
+
+`hexdump --no-squeezing {{path/to/file}}`