Print progress of mysql sync operation.

progress.sh

#!/bin/bash

PID=$(ps aux | grep mysql-dev-backup-s3 | grep -v grep | awk '{ print $2 }')

# for some stupid reason, stat in our vagrant vms takes `-c format` not `-f`...

ontrap () {
    echo
    exit 0
}
trap ontrap SIGINT SIGTERM

while true; do
    line=$(
    lsof -o0 -o -p $PID |
    awk '
                BEGIN { CONVFMT = "%.2f" }
                $4 ~ /^[0-9]+r$/ && $7 ~ /^0t/ {
                        offset = substr($7, 3)
                        fname = $9
                        "stat -c %s '\''" fname "'\''" | getline
                        len = $0
                        print fname, ":", offset, "/", len, offset / len * 100 "%"
                }
        '
    )
    /bin/echo -ne "$line"'\r'
    sleep 1
done