parallel wget

gistfile1.sh

#!/bin/bash

# escape sequences http://ascii-table.com/ansi-escape-sequences.php
# http://www.climagic.org/mirrors/VT100_Escape_Codes.html

wget http://www.opendatacache.com/bronx.lehman.cuny.edu/api/views/4iu9-f7ju/rows.csv --progress=bar:force -O rows1.csv 2>log1.log &
wget http://www.opendatacache.com/bronx.lehman.cuny.edu/api/views/4iu9-f7ju/rows.csv --progress=bar:force -O rows2.csv 2>log2.log &
wget http://www.opendatacache.com/bronx.lehman.cuny.edu/api/views/4iu9-f7ju/rows.csv --progress=bar:force -O rows3.csv 2>log3.log &

for logfile in $( ls *.log ); do
  echo ''
done
while True; do
  echo -e "\033[4A"
  for logfile in $( ls *.log ); do
    echo -e "\033[K$(tail -n 3 $logfile | grep -m 1 '%') $logfile"
  done
  if [ -z "$(jobs)" ]; then
    # one last update
    echo -e "\033[4A"
    for logfile in $( ls *.log ); do
      echo -e "\033[K$(tail -n 4 $logfile | grep -m 1 '%') $logfile"
    done
    break
  else
    jobs >/dev/null
    sleep 0.1
  fi
done

wait