Be such productive while you type as fast and loud as you want

such-productive.sh

#!/bin/bash

await-key () {
    tput smso
    tput rmso
    oldstty=`stty -g`
    stty -icanon -echo min 1 time 0
    dd bs=1 count=1 >/dev/null 2>&1
    stty "$oldstty"
}

select-random () {
    txt="$@"
    if [ -z "$txt" ]; then
        txt="`cat`"
    fi
    echo "$txt" | sort -R | head -n1
}

dir="/usr/include"
files="$(find $dir -type f -name '*.h' -print | sed 's/\s+/\n/g')"

while :; do
    await-key
    # Echo random line from random header file
    cat "$(select-random "$files")" | select-random
done

Demo: http://img.chartio.com/2F0Q2E1V1Y2d