the following message appear "(-bash: file_name : Prmission denied)" when i try to do backup of the SVN

please if you can help me .... when i made the backup in the "root" /home ... the size of the root space not enough so i try to make the backup on other place "/backup" but the following message appear : (-bash: file_name : Prmission denied)

From serverfault Osama Ahmad

• You may not have permission to (a) read files in /home, especially if its a shared host, or (b) write to /backup. If you run it as root (using either su or sudo), you should be able to run the command.

  EDIT: When you run sudo, what you'll want to do is sudo sh -c 'svnadmin dump myrepos > dumpfile'; that way, you're running the entire command--redirection and all--as root.

  Osama Ahmad : i used sudo but the same message appear !!! i don't konow why ... in other word the following command don't work any where elsa home "svnadmin dump myrepos > dumpfile" ... any other plase give me "NO Prmission"

  Redmumba : How did you run that command? If you did `sudo svnadmin dump myrepos > dumpfile`, you are only assuming superuser access for the svnadmin aspect. What you'll want to do is `sudo sh -c 'svnadmin dump myrepos > dumpfile'`; that way, you're running the entire command--redirection and all--as root.
  From Redmumba

• You wrote you use sudo. The command

  # sudo svnadmin dump myrepos > dumpfile
  

  will run `svnadmin dump myrepos with the rights of root. The > dumpfile part will not have the rights of root.

  You could write a script, put the command in it and sudo the whole script or construct a one-liner like

  # sudo svnadmin dump myrepos | sudo tee dumpfile > /dev/null
  

  or

  # sudo sh -c 'svnadmin dump myrepos > dumpfile'
  

  or

  # svnadmin dump myrepos | sudo tee dumpfile > /dev/null
  

  if you are allowed to read myrepos with user-rights

  From krissi