ibuffer-hooks

ibuffer-hooks is a variable defined in `ibuffer.el'.
Its value is

nil

• This variable is an alias for `ibuffer-hook'.
• This variable is obsolete since 22.1;
  use `ibuffer-hook' instead.
• This variable may be risky if used as a file-local variable.

Documentation:
Hook run when `ibuffer' is called.

You can customize this variable.