Bash script greater than or equal to if statement not functioning as expected - bash

Question

The goal of this script is to get the output of my getCpuTemp function, which is currently 60.1, and to send me a push notification via Pushbullet if the CPU temperature is over 70 degrees.
My script currently thinks that 60.1 is over 70, and I'm not sure why, is there something wrong with my if statement?
function getCpuTemp {
sensors cpu_thermal-virtual-0 | awk 'FNR == 3 {print $2}' | tr -d '+\°\C'
}
function sendPushNotification {
curl --header 'Access-Token: <REDACTED>' \
--header 'Content-Type: application/json' \
--data-binary '{"body":"Server CPU Temp is very warm.","title":"WARNING: HIGH TEMP","type":"note"}' \
--request POST \
https://api.pushbullet.com/v2/pushes
}
if getCpuTemp -ge 70; then
echo "ABOVE 70"
sendPushNotification
else
echo "BELOW 70"
fi

Answer 1

As #CharlesDuffy already pointed out in comments, your use of -ge is invalid syntax plus bash doesn't understand floating point numbers but awk does and you're already using it so consider:
cpuTempIsOverOrEqual() {
sensors cpu_thermal-virtual-0 |
awk -v max="$1" 'NR == 3 {exit (($2+0)>=max ? 0 : 1)}'
}
sendPushNotification() {
curl --header 'Access-Token: <REDACTED>' \
--header 'Content-Type: application/json' \
--data-binary '{"body":"Server CPU Temp is very warm.","title":"WARNING: HIGH TEMP","type":"note"}' \
--request POST \
https://api.pushbullet.com/v2/pushes
}
if cpuTempIsOverOrEqual 70; then
echo "ABOVE OR EQUAL TO 70"
sendPushNotification
else
echo "BELOW 70"
fi
I'm assuming above that the output of sensors cpu_thermal-virtual-0 has those characters that you're using tr to remove attached to the end of the 2nd field and, if so, you don't need to do that as awk will strip non-numeric characters from the end of any string you perform a numeric operation on, e.g. +0:
$ printf 'a\nb\nx %s+°C\nd\n' 60.1
a
b
x 60.1+°C
d
$ printf 'a\nb\nx %s+°C\nd\n' 60.1 |
awk 'NR == 3 {print $2+0}'
60.1
$ printf 'a\nb\nx %s+°C\nd\n' 60.1 |
awk -v max="70" 'NR == 3 {exit (($2+0)>max ? 0 : 1)}'; echo $?
1
$ printf 'a\nb\nx %s+°C\nd\n' 70.1 |
awk -v max="70" 'NR == 3 {exit (($2+0)>max ? 0 : 1)}'; echo $?
0
If that assumption is wrong then edit your question to show us the output of sensors cpu_thermal-virtual-0 | head -n 3 so we know what you're trying to parse.
Obviously pick whatever name you like for the function and change >= to > if you want the comparison to be greater than (as you say you want in your text) rather than greater than or equal to (as you have in your code with -ge).