stegsnow: add page (#9933)

pages/linux/stegsnow.md

@@ -0,0 +1,28 @@
+# stegsnow
+
+> Steganography tool for concealing and extracting messages in text files encoded as tabs and spaces.
+> More information: <https://darkside.com.au/snow/manual.html>.
+
+- Extract [m]essage from file:
+
+`stegsnow {{path/to/file.txt}}`
+
+- Extract [C]ompressed and [p]assword protected [m]essage from file:
+
+`stegsnow -C -p {{password}} {{path/to/file.txt}}`
+
+- Determine approximate [S]torage capacity with line [l]ength less than 72 for file:
+
+`stegsnow -S -l 72 {{path/to/file.txt}}`
+
+- Conceal [m]essage in text from file and save to result:
+
+`stegsnow -m '{{message}}' {{path/to/file.txt}} {{path/to/result.txt}}`
+
+- Conceal message [f]ile content [C]ompressed in text from file and save to result:
+
+`stegsnow -C -f '{{path/to/message.txt}}' {{path/to/file.txt}} {{path/to/result.txt}}`
+
+- Conceal [m]essage [C]ompressed and [p]assword protected in text from file and save to result:
+
+`stegsnow -C -p {{password}} -m '{{message}}' {{path/to/file.txt}} {{path/to/result.txt}}`