Update cheatsheets

linux/run-mailcap

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+---
+syntax: markdown
+tags: [tldr, linux]
+source: https://github.com/tldr-pages/tldr.git
+---
+# run-mailcap
+
+> Run MailCap Programs.
+> Run mailcap view, see, edit, compose, print - execute programs via entries in the mailcap file (or any of its aliases) will use the given action to process each mime-type/file.
+> More information: <https://manned.org/run-mailcap>.
+
+- Individual actions/programs on run-mailcap can be invoked with action flag:
+
+`run-mailcap --action=ACTION [--option[=value]]`
+
+- In simple language:
+
+`run-mailcap --action=ACTION {{filename}}`
+
+- Turn on extra information:
+
+`run-mailcap --action=ACTION --debug {{filename}}`
+
+- Ignore any "copiousoutput" directive and forward output to `stdout`:
+
+`run-mailcap --action=ACTION --nopager {{filename}}`
+
+- Display the found command without actually executing it:
+
+`run-mailcap --action=ACTION --norun {{filename}}`