Add nodejs.install() for "typical" nvm / node.js install

also some related tweaks, necessary for that

rattail_fabric2/util.py

@@ -119,7 +119,10 @@ def append(c, filename, text, use_sudo=False, partial=False, escape=True,
             and contains(c, filename, regex, use_sudo=use_sudo, escape=False,
                          shell=shell)):
             continue
-        line = line.replace("'", r"'\\''") if escape else line
+        if escape:
+            line = line.replace("'", r"'\\''") # TODO: does this one even work?
+            line = line.replace('"', r'\"')
+            line = line.replace('$', r'\$')
         func("""bash -c "echo '%s' >> %s" """ % (line, _expand_path(c, filename)))
 
 
@@ -178,3 +181,14 @@ def _expand_path(c, path):
        This function is derived from one copied from fabric v1.
     """
     return path if is_win(c) else '"$(echo %s)"' % path
+
+
+def get_home_path(c, user=None):
+    """
+    Retrieve the path to the home folder for the given user, or else the
+    "connection" user.
+    """
+    user = user or c.user
+    home = c.run('getent passwd {} | cut -d: -f6'.format(user)).stdout.strip()
+    home = home.rstrip('/')
+    return home