Print multi-line output one the same line

README.md

Print multi-line output one the same line

Instructions

NEW

Soo, after finding out about xargs I got this solution instead 😅:

./linePrinter.sh | xargs -l1 -d '\n' printf '\r\r%s'

OLD

Just pipe the output in to the script: ./linePrinter.sh | ./lastLineShower.sh!

*./linePrinter.sh is included for demonstration (to test out the solution)

lastLineShower.sh

#!/bin/bash

# Check to see if a pipe exists on stdin.
if [ -p /dev/stdin ]; then
    while IFS= read line; do
	    printf "\r\r${line}"
    done  
else
    echo -e "\033[0;31mNo input was piped in to the script, skipping!\033[0m"
    exit 1
fi

linePrinter.sh

#!/bin/bash

# Example line printer script
while true
do
    echo "param: $(( $RANDOM % 50 + 1 ))"
    sleep 0.1
done