Update cheatsheets

srm

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+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# srm
+
+> Securely remove files or directories.
+> Overwrites the existing data one or multiple times. Drop in replacement for rm.
+> More information: <http://srm.sourceforge.net/srm.html>.
+
+- Remove a file after a single-pass overwriting with random data:
+
+`srm -s {{path/to/file}}`
+
+- Remove a file after seven passes of overwriting with random data:
+
+`srm -m {{path/to/file}}`
+
+- Recursively remove a directory and its contents overwriting each file with a single-pass of random data:
+
+`srm -r -s {{path/to/directory}}`
+
+- Prompt before every removal:
+
+`srm -i {{\*}}`