bash functions to make life a little easier

.functions

# Use https://github.com/mathiasbynens/dotfiles as a starting point
# Read it all before you run it or you WILL jack some things up.
# Add your extra functions to the .functions file.
# Restart terminal, or just `source ~/.functions` to refresh

countfiles.sh

# Count the number of files of a specific type
function countfiles() {
  local filetype="$1"
	ls *."$filetype" -l | wc -l
}

extractaudio

# Extract audio from a video file with ffmpeg
function extractaudio() {
  video=$1
	ffmpeg -i "$video" -vn -ac 2 -ar 44100 -ab 320k -f mp3 "${video%.*}.mp3"
}

php-switch.sh

# Switch which version of PHP to use from CLI
# see https://coderwall.com/p/vn1iqg
function php-switch() {
  local version="$1"
	
	if [ "$version" = '-h' ]; then
		echo "Usage: `basename ${FUNCNAME[0]}` [-h] [-v (53|54|55)]"
	elif [ "$version" = "" ]; then
		echo "`$(basename php) --version`"
		
	else 
		if [ "$version" = "53" ]; then 
			brew unlink php54 && brew unlink php55 && brew unlink php53 && brew link php53
		elif [ "$version" = "54" ]; then 
			brew unlink php53 && brew unlink php55 && brew unlink php54 && brew link php54
		elif [ "$version" = "55" ]; then
			brew unlink php53 && brew unlink php54 && brew unlink php55 && brew link php55
		fi
		
		php --version
	fi
}

sha256sum.sh

# Useful for generating the SHA256 hash from a single file.
function sha256sum() {
	local FILE="$1"
	
	shasum -a 256 "$FILE" | cut -d" " -f1
}

untar.sh

# Extract files from a tarball without having to remember the exact flag sequence
function untar() {
  tar -xvzf "$@"
}

updaterepos.sh

# Update all the git repositories under ~/Repositories
function updaterepos() {
  for f in ~/Repositories/*
	do 
		cd $f && git pull origin master && cd ..
	done
}