-#!/bin/bash
+#!/bin/sh
-alias df='df -h'
-alias du='du -h -s *'
-alias ls='ls -l -h --color=always --time-style=long-iso'
+alias df='df --human-readable'
+alias du='du --human-readable --summarize *'
+alias ls='ls -l --color=auto --human-readable --time-style=long-iso'
+alias youtube-dl-mp3='youtube-dl --extract-audio --audio-format=mp3'