Omie · January 16, 2019 03:47
diff --git a/bash-magic-up-line.sh b/bash-magic-up-line.sh
 #!/bin/bash
 echo "Magic!" echo -en "\033[1F\033[2K" echo "Moar Magic!"

 #This script will print "Magic!" then the next echo sends escape sequences that move the cursor up 1 line with '\033[1F', then '\033[2K' clears the line the cursor is on, which is now the "Magic!" line. Then we output "Moar Magic". 3 commands but only one line of output.
 #The -e option on echo enables the escape sequences instead of literal chars. -n disables echos automatic newline for the sequence that deletes the first line

 # https://news.ycombinator.com/item?id=18915489
	#!/bin/bash
	echo "Magic!" echo -en "\033[1F\033[2K" echo "Moar Magic!"

	#This script will print "Magic!" then the next echo sends escape sequences that move the cursor up 1 line with '\033[1F', then '\033[2K' clears the line the cursor is on, which is now the "Magic!" line. Then we output "Moar Magic". 3 commands but only one line of output.
	#The -e option on echo enables the escape sequences instead of literal chars. -n disables echos automatic newline for the sequence that deletes the first line

	# https://news.ycombinator.com/item?id=18915489