svn: E200009: 'lib/systemd/system/dropbear@.service': a peg revision is not allowed here problem

case:

　　svn add lib/systemd/system/dropbear@.service

　　　　svn: E200009: 'lib/systemd/system/dropbear@.service': a peg revision is not allowed here

analyze:

　　google:

reference

　　https://stackoverflow.com/questions/757435/how-to-escape-characters-in-subversion-managed-file-names

solution:

　　svn add lib/systemd/system/dropbear@.service@
A lib/systemd/system/dropbear@.service