Easier directory navigation for Bash. Add to your .bashrc file. You can usually get where you need to be by just hitting Ctrl-O a lot, and avoid typing lots of cd this and cd that. See comments below for more info.

easier-directory-navigation.sh

# Ctrl-P: go to parent dir (same as cd ..)
bind -m vi-insert '"\C-P":"\C-E\C-Ucd ..\C-M"'
bind -m emacs     '"\C-P":"\C-E\C-Ucd ..\C-M"'

# Ctrl-O or Ctrl-B: go back to previous directory you were in
bind -m vi-insert '"\C-O":"\C-E\C-Ubackd\C-M"'
bind -m emacs     '"\C-O":"\C-E\C-Ubackd\C-M"'
bind -m vi-insert '"\C-B":"\C-E\C-Ubackd\C-M"'
bind -m emacs     '"\C-B":"\C-E\C-Ubackd\C-M"'

# Ctrl-F: go fwd a directory, retracing steps
bind -m vi-insert '"\C-F":"\C-E\C-Ufwdd\C-M"'
bind -m emacs     '"\C-F":"\C-E\C-Ufwdd\C-M"'

alias backd='pushd +1 >/dev/null'
alias fwdd='pushd -0 >/dev/null'
cd () {
  if [ "$*" = "" ]; then
    pushd $HOME >/dev/null
  else
    pushd "$*" >/dev/null
  fi
}