For jumping around deeply nested folders.

marks.sh

#!/bin/bash

# Slightly modified code from: http://jeroenjanssens.com/2013/08/16/quickly-navigate-your-filesystem-from-the-command-line.html
# Just add the following in your .bashrc or .zshrc or you can even source it in every session.
 
# Examples:
#  cd ~/some/very/deep/often-used/directory
#   $ mark deep
#   [when you are in other location] $ jump deep
#   $ marks  # for listing all the marks
#   $ unmark deep
 
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 $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