Script I write to squat palindromic CR ids. I spent way too long on this.

get_palindromic_cr.sh

read -p "Enter a string: " string
if [[ $(rev <<< $string) == "$string" ]]; then
    echo Palindrome
fi

kcurl -s -o /dev/null -I -w "%{http_code}" https://cr.amazon.com/r/$FOO
curl -s http://www.example.com | sed -e 's#<!doctype.*##gm' | xpath '/html/body/div/h1/text()'

crlink=`kcurl -s https://cr.amazon.com/r/ | xmllint --html --xpath 'string(//*[@id="datagrid-0"]/div[2]/table/tbody/tr[1]/td[2]/a/@href)' 2>/dev/null -`
cr=${latestcr//[\/r]/}
((pre=cr/1000))
pal=$[pre * 1000 + $(rev <<< $[pre/10])]
if (( pal < cr )); then
    pal=$[((pre+1)) * 1000 + $(rev <<< $[pre/10])]
fi
paldiff=$[pal-cr]
echo "There are $paldiff CRs to go until palindromic CR $pal"
read -p "Press enter to start watching $[pal-1]"
while status=`kcurl -s -o /dev/null -I -w "%{http_code}" https://cr.amazon.com/r/$[pal-1]`; do
  echo $status
  if (( status == 200 )); then
    post-review;
    exit 0;
  fi
  sleep 2