Update cheatsheets

ropgadget

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+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# ROPgadget
+
+> Find ROP gadgets in binary files.
+> More information: <https://github.com/JonathanSalwan/ROPgadget>.
+
+- List gadgets in the binary file:
+
+`ROPgadget --binary {{path/to/binary}}`
+
+- Filter gadgets in the binary file by a regular expression:
+
+`ROPgadget --binary {{path/to/binary}} --re {{regex}}`
+
+- List gadgets in the binary file, excluding specified type:
+
+`ROPgadget --binary {{path/to/binary}} --{{norop|nojob|nosys}}`
+
+- Exclude bad byte gadgets in the binary file:
+
+`ROPgadget --binary {{path/to/binary}} --badbytes {{byte_string}}`
+
+- List gadgets up to the specified number of bytes in the binary file:
+
+`ROPgadget --binary {{path/to/binary}} --depth {{nbyte}}`