#!/bin/bash
# Demo code from https://www.vidarholen.net/contents/blog/?p=632

# Show uptime for all hosts
while IFS= read -r host
do
  ssh "$host" uptime
done < hostnames.txt


# Play mkv video files in random order
find . -name '*.mkv' | shuf |
    while IFS= read -r file
    do
      mplayer -fs "$file"
    done

# Convert a range of avi files to mp4
printf 'vid%05d.avi\n' {34..120} |
    while IFS= read -r file
    do
      ffmpeg -i "$file" "${file%.*}.mp4"
    done