Linux

export MARKPATH=$HOME/.marks
function jump {
    cd -P "$MARKPATH/$1" 2>/dev/null || echo "No such mark: $1"
}
function mark {
    mkdir -p "$MARKPATH"; ln -s "$(pwd)" "$MARKPATH/$1"
}
function unmark {
    rm -i "$MARKPATH/$1"
}
function marks {
    ls -l "$MARKPATH" | sed ‘s/  / /g‘ | cut -d‘ ‘ -f9- | sed ‘s/ -/\t-/g‘ && echo
}
_completemarks() {
  local curw=${COMP_WORDS[COMP_CWORD]}
  local wordlist=$(find $MARKPATH -type l -printf "%f\n")
  COMPREPLY=($(compgen -W ‘${wordlist[@]}‘ -- "$curw"))
  return 0
}
complete -F _completemarks jump unmark

export stdPath=/home/trace
153 export stdDate=`date +%Y%m%d%H`
154 export stdout=${stdPath}/s${stdDate}