write_when_new, gitea, ifup/ifdown

- create parent directory with root access, if needed
- omit gitea check when repo is not available
- replace 'ifup <net>  by  ifconfig <net> up'

gitea.py

@@ -86,7 +86,11 @@ def change_to_gitea(doit, *repos):
     cwd = os.getcwd()
     try:
         for repo in repos:
-            os.chdir(Path('~').expanduser() / repo)
+            repodir = Path('~').expanduser() / repo
+            if not repodir.is_dir():
+                print(repodir, 'does not exist')
+                continue
+            os.chdir(repodir)
             try:
                 parser = ConfigParser()
                 parser.read('.git/config')