bash twitter client

#!/bin/bash
#
# bash twitter client using json api
#
txtred=$(tput setaf 1) # Red
txtgrn=$(tput setaf 2) # Green
txtylw=$(tput setaf 3) # Yellow
txtblu=$(tput setaf 4) # Blue
txtpur=$(tput setaf 5) # Purple
txtcyn=$(tput setaf 6) # Cyan
txtwht=$(tput setaf 7) # White
txtrst=$(tput sgr0)
i=1
COLOR=0
unique=`date +"%Y-%m-%d-%T"`
AUTHKEY=`cat ~/twitter.key|head -1`

print_tweets(){

  cat /tmp/twitter.$unique.json|jq ".statuses[].text" >/tmp/twitter.$unique.out

  while read line ;
  do
    date=`date +"%Y-%m-%d-%T"`
    if [ $COLOR -eq 0 ] ; then
       # echo "${txtred} -- $i --"
       echo
       echo "${txtwht} $date ${txtred}$line"
    else
       # echo "${txtred} -- $i --"
       echo
       echo "${txtwht} $date ${txtgrn}$line"
    fi
    let i+=1
  done </tmp/twitter.$unique.out

  if [ $COLOR -eq 0 ] ; then
    COLOR=1
  else
    COLOR=0
  fi

}

if [ $# -eq 0 ] ; then
  echo
  echo "usage: twitter <searchstring> [<lang>]"
  echo
  exit 0
fi

if [ $# -gt 1 ] ; then
  LANG="&lang=$2"
else
  LANG=""
fi

SEARCH=`echo $1|sed "s/#/%23/g"`
SEARCH=`echo $SEARCH|sed "s/@/%40/g"`
SEARCH=`echo $SEARCH|sed "s/ /%20/g"`
SEARCH=`echo $SEARCH|sed "s/or/OR/g"`
SEARCH=`echo $SEARCH|sed "s/and/AND/g"`

echo $SEARCH
curl -s -H"Authorization: Bearer $AUTHKEY" "https://api.twitter.com/1.1/search/tweets.json?q="$SEARCH"$LANG&count=20&result_type=mixed" >/tmp/twitter.$unique.json

print_tweets

LASTID=`cat /tmp/twitter.$unique.json|jq ".statuses[].id_str"|head -1|cut -d"\"" -f2`

while [ true ] ; do
  curl -s -H"Authorization: Bearer $AUTHKEY" "https://api.twitter.com/1.1/search/tweets.json?q="$SEARCH"$LANG&count=10&result_type=mixed&since_id=$LASTID" >/tmp/twitter.$unique.json
  COUNT=`cat /tmp/twitter.$unique.json|jq ".statuses[].id_str"|wc -l`
  if [ "$COUNT" != "0" ] ; then
      LASTID=`cat /tmp/twitter.$unique.json|jq ".statuses[].id_str"|head -1|cut -d"\"" -f2`
      print_tweets
  fi

  sleep 3
done