t-whois.sh

#!/usr/bin/env bash
# -*- coding: utf-8 -*- 

# use t CLI to fetch follower count and other stats from twitter
# save results to a csv file

if [ -z "$1" ]; then
  echo "no username specified" >&2
  exit 1
else
  SCREEN_NAME="$1"
  OUTFILE="twitter-whois-"$SCREEN_NAME".csv"
fi

if [ ! -f $OUTFILE ]; then
  echo "Creating an output csv file to save data..."
  touch "$OUTFILE"
fi
echo ""$OUTFILE" has $(wc -l<"$OUTFILE") rows"
echo "fetching data from twitter..."
if [[ $(wc -l <"$OUTFILE") -ge 2 ]]; then 
  t whois $SCREEN_NAME --csv --long | tail -n +2 >> $OUTFILE
else
  t whois $SCREEN_NAME --csv --long >> $OUTFILE
fi

# remove duplicates and overwrite the file
awk '!seen[$0]++' $OUTFILE > tmp.csv

# if all worked then overwrite contents of original file
if [[ $(wc -l <tmp.csv) -ge 2 ]]; then 
  mv tmp.csv $OUTFILE -f
  echo "Results written to $OUTFILE"
  echo ""$OUTFILE" has $(wc -l<"$OUTFILE") rows"
  echo "done"
  exit 0
else
  echo "something went wrong"
  exit 1
fi