Update alternative helper aliases

.bash_aliases

update-alternatives-install() {
	read -p "Enter command name whose alternative is being set: " cmd_name
	echo
	read -p "Enter path of the link to '$cmd_name': " cmd_link
	echo
	read -p "Enter path to the actual executable which is being set as alternative: " alt_path
	echo
	read -p "Enter the priority of the alternative: " alt_priority
	echo
	echo

	update_cmd_str="sudo update-alternatives --install $cmd_link $cmd_name $alt_path $alt_priority"
	
	echo $update_cmd_str
	echo
	eval "$update_cmd_str"
}


add-gcc-alternatives() {
	read -p "Enter gcc version number: " ver
	echo

	# Slave idea from: https://stackoverflow.com/a/44217770
	# We should probably add other slaves too, like cross-compiler ones.
	slaves=(g++ gcov gcov-dump gcov-tool gcc-ar gcc-nm gcc-ranlib)

	NL=$'\n'
	TAB=$'\t'

	update_cmd_str="sudo update-alternatives"
	update_cmd_str+=" \\${NL}${TAB}"
	update_cmd_str+="--install /usr/bin/gcc gcc /usr/bin/gcc-${ver} ${ver}"

	for slave in "${slaves[@]}"; do
		update_cmd_str+=" \\${NL}${TAB}${TAB}"
		update_cmd_str+="--slave /usr/bin/${slave} ${slave} /usr/bin/${slave}-${ver}"
	done

	echo "$update_cmd_str"
	echo
	eval "$update_cmd_str"
}