linux directory mark utils to change dir fast. copy from: http://www.ccvita.com/520.html

cd_mark

#!/bin/bash




# mark dir
# add this line to ~/.bashrc:
#  if [ -f cd_mark ]; then ./cd_mark; fi
# usage: func $mark
#  mls: list all the mark
#  mcd: cd marked dir
#  mark: add new mark
#  unmark: delete mark


# dir mark
export MARK_DIR=$HOME/.marks
export DEFAULT_MARK=tango

function mcd {
  local m=$1
  if [ "$m" = "" ]; then m=$DEFAULT_MARK; fi
  cd -P "$MARK_DIR/$m" 2>/dev/null || echo "No such mark: $m"
}

function mark {
  mkdir -p $MARK_DIR
  local m=$1
  if [ "$m" = "" ]; then m=$DEFAULT_MARK; fi
  rm -f $MARK_DIR/$m
  ln -s `pwd` $MARK_DIR/$m
}

function unmark {
  local m=$1
  if [ "$m" = "" ]; then m=$DEFAULT_MARK; fi
  rm -i "$MARK_DIR/$m"
}

function mls {
  # sed to replace multiple spaces to one
  ls -l "$MARK_DIR" | grep ^l | sed 's/\s\s*/ /g' | cut -d ' ' -f 9-
}