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Full Discussion: Removing empty folders using 'find'
Top Forums UNIX for Dummies Questions & Answers Removing empty folders using 'find' Post 302187354 by era on Monday 21st of April 2008 02:24:03 AM
Old 04-21-2008
Maybe it would be better to start a new thread for this question, but anyway, here goes.

1. Search for any directory

2. If directory contains any non-dot files, skip it (= mark for keeping).

3. Otherwise, print it.

Code:
find -type d -print |
while read dir; do
  keep=false
  for file in "$dir"/*; do
    case $file in
      "$dir"/.*) continue;;  # redundant?  see below
      # "$dir"/\*) continue;;  # maybe need this too, depend on globbing settings
      *) keep=true; break;;
    esac
  done
  if ! $keep; then
    echo "$dir"
  fi
done

Maybe radoulov can come up with an elegant one-liner for this; it's not particularly succinct.

This just echoes the directories; if it seems to work for you, you can change the echo to rm -rf

If your shell doesn't expand non-matching wildcards to an empty string, you might need the case which I commented out, too. (Actually maybe the .* case is redundant; wildcards don't expand dotfiles in bash at least.)
Last edited by era; 04-21-2008 at 03:31 AM.. Reason: empty-glob observation
 

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LEARN ABOUT REDHAT

glpushname

GLPUSHNAME(3G)															    GLPUSHNAME(3G)

NAME

       glPushName, glPopName - push and pop the name stack

C SPECIFICATION

       void glPushName( GLuint name )

PARAMETERS

       name  Specifies a name that will be pushed onto the name stack.

C SPECIFICATION

       void glPopName( void )

DESCRIPTION

       The  name stack is used during selection mode to allow sets of rendering commands to be uniquely identified.  It consists of an ordered set
       of unsigned integers and is initially empty.

       glPushName causes name to be pushed onto the name stack.  glPopName pops one name off the top of the stack.

       The maximum name stack depth is implementation-dependent; call GL_MAX_NAME_STACK_DEPTH to find out the value for a  particular  implementa-
       tion.  It  is  an  error to push a name onto a full stack, or to pop a name off an empty stack.	It is also an error to manipulate the name
       stack between the execution of glBegin and the corresponding execution of glEnd.  In any of these cases, the error flag is set and no other
       change is made to GL state.

       The  name  stack  is  always  empty  while the render mode is not GL_SELECT.  Calls to glPushName or glPopName while the render mode is not
       GL_SELECT are ignored.

ERRORS

       GL_STACK_OVERFLOW is generated if glPushName is called while the name stack is full.

       GL_STACK_UNDERFLOW is generated if glPopName is called while the name stack is empty.

       GL_INVALID_OPERATION is generated if glPushName or glPopName is executed between a call to glBegin and the corresponding call to glEnd.

ASSOCIATED GETS

       glGet with argument GL_NAME_STACK_DEPTH
       glGet with argument GL_MAX_NAME_STACK_DEPTH

SEE ALSO

       glInitNames(3G), glLoadName(3G), glRenderMode(3G), glSelectBuffer(3G)

																    GLPUSHNAME(3G)
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