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+The system's default text editor can be defined within /etc/profile.  It's given the variable `EDITOR`.
+
+Add these lines to /etc/profile:
+
+```
+
+export EDITOR=vim
+
+export VISUAL=$EDITOR
+
+```
+
+Then reload that profile with:
+
+> source /etc/profile
+
+If nano still pops up:
+
+> sudo ln -sf $(which vim) $(which nano)
+