init

.zprezto/modules/command-not-found/README.md

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+Command-Not-Found
+=================
+
+Displays installation information for not found commands by loading the
+[command-not-found][1] tool on Debian-based and Arch Linux-based distributions.
+
+Authors
+-------
+
+*The authors of this module should be contacted via the [issue tracker][2].*
+
+  - [Joseph Booker](https://github.com/sargas)
+
+[1]: https://code.launchpad.net/command-not-found
+[2]: https://github.com/sorin-ionescu/prezto/issues

.zprezto/modules/command-not-found/init.zsh

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+#
+# Displays installation information for not found commands.
+#
+# Authors:
+#   Joseph Jon Booker <joe@neoturbine.net>
+#
+
+# Load command-not-found on Debian-based distributions.
+if [[ -s '/etc/zsh_command_not_found' ]]; then
+  source '/etc/zsh_command_not_found'
+# Load command-not-found on Arch Linux-based distributions.
+elif [[ -s '/usr/share/doc/pkgfile/command-not-found.zsh' ]]; then
+  source '/usr/share/doc/pkgfile/command-not-found.zsh'
+# Return if requirements are not found.
+else
+  return 1
+fi