How can I compare numbers obtained through a command in bash in a script?

Asked Oct 31 '22 at 06:41

Active Oct 31 '22 at 07:26

Viewed 31 times

Im trying to get the internet speed and compare it to various values and print if its good or not. All this is done in my macOS zsh terminal.

Var2=$(ping -c 4 www.google.com | tail -1| awk '{print $4}' | cut -d '/' -f 2)
  echo "Average ping time to google.com is $Var2"
  if (( $Var2 < 7 ))
  then
      echo Excellent Connection
  elif (( $Var2 < 7.5 ))
  then
      echo Good Connection
  elif (( $Var2 < 8 ))
  then
      echo Slow Connection
  elif (( $Var2 < 8.1 ))
  then
      echo Bad Connection
  fi

This causes a syntax error: invalid arithmetic operator (error token is ".609 < 7 ") four times.

edited Oct 31 '22 at 07:26

asked Oct 31 '22 at 06:41

Boros

Which shell do you use? Please fix your question and tags. – Cyrus Oct 31 '22 at 06:44
Mind that Bash doesn't recognize decimals. – konsolebox Oct 31 '22 at 07:26
Add a hashbang to the top of the file: `#!/usr/bin/env zsh`. A script launched from `zsh` does not use `zsh` as the interpreter without it (unlike bash). – Gairfowl Oct 31 '22 at 07:32
PS: I don't think the linked duplicate question applies here; none of the answers directly address using `zsh`. – Gairfowl Oct 31 '22 at 07:38

How can I compare numbers obtained through a command in bash in a script?

0 Answers0