nn() {
    local NOTE_FILE=$HOME/.notes
    #if file doesn't exist, create it
    [[ -f $NOTE_FILE ]] || touch $NOTE_FILE
   
    #no arguments, print file
    if [[ $# == 0 ]]; then
       cat -n $NOTE_FILE | less
    #clear file
    elif [[ $1 == "-c" ]]; then
        > $NOTE_FILE
        #   for i in ; do
        #   sed -i -e "$i d" $NOTE_FILE
        #   done
    #edit file
    elif [[ $1 == "-e" ]]; then
        vim $NOTE_FILE
    elif [[ $1 == "-s" ]]; then
        tail -"$2" $NOTE_FILE
    elif [[ $1 == "-h" || $1 == "--help" ]]; then
        printf "Make quick notes\nUsage:   nn [options|note]\n\t\t show notes from ${NOTE_FILE}\n\t-c\t clear ${NOTE_FILE}\n\t-e\t edit ${NOTE_FILE}\n\t-s  show last  lines\n"
    #add all arguments to file
    else
        echo ">> $@" >> $NOTE_FILE
    fi
}

http://aur.archlinux.org/packages.php?ID=31911

(Not that the manual installation is much complicated.)

It’s only a simple bash script which uses common utilities (grep, sed, wc) to manage a simple todo in a text file.

alias tadd='echo $* >> ~/todofile'

Then you can just do “tadd my note text” to add a new note. For removing, sed is your friend:

alias trem='sed -i -v "$*" ~/todofile'

Then you just have to give some identifiable word or substring (read: only present in that note) to remove the note.

Although it would not be lot of trouble to write a little script to handle arguments like -a to add -v to view and -r to remove.
I think this could be a great way for you to start learning bash. =)