Simple script for compressing all bag files under a folder

compress_bags.sh

#!/bin/bash
# Simple script for compressing all bag files under a folder.
# Optionally, deletes the backup files created by rosbag.

read -p "Compress every bag file under $PWD ? (y/n)" yn
# initial user consent
if [ "$yn" == "n" ]; then
  exit 0
fi
# optionally remove backups right away
read -p "Remove original backups? (y/n)" remove_originals

for filename in *.bag; do
    [ -f "$filename" ] || break
    echo "$filename"
    rosbag compress "$filename"

    # remove backups if opted
    if [ "$remove_originals" == "y" ]; then
        extension="${filename##*.}"
        basename="${filename%.*}"
        rm "${basename}.orig.${extension}"
    fi

done

echo done