Bash Script that downloads a file and checks the value if 1 or 0

Question

I need a Bash Script for Debian which downloads a file, that file containts 1 or 0, 1 when the services is running, 0 when not. So how can I check if the file contains 1 or 0?

Downloads how? By HTTP? FTP? STFP? The "wget" tag implies HTTP, but would be good to be explicit. — JohnCC, Aug 04 '14 at 09:52
We generally don't write scripts for people - we prefer them to have a go themselves and then show their working when asking for help debugging. — user9517, Aug 04 '14 at 11:54
Why do you need this? Why 0 and 1, why not 200 status. Why not a monitoring solution? What problem are you trying to solve? — Drew Khoury, Aug 04 '14 at 12:22

JohnCC · Answer 1 · 2014-08-04T13:13:37.160

1

Something like:-

status="$(curl -s http://yoursite.com/status.php)"
if [[ $status =~ ^1 ]]; then
  # site is up...
fi

edited Aug 04 '14 at 13:13

answered Aug 04 '14 at 10:38

JohnCC

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14

Dosent works i get line 3: =1: command not found, line 3 is if [[ in my script – Ne00n Aug 04 '14 at 11:45
Oops typo .. now fixed – JohnCC Aug 04 '14 at 13:14

score 1 · Accepted Answer · answered Aug 04 '14 at 11:49

Bourne shell generically has a nice way to evaluate the contents of a string (not using test or [[ or whatever).

contents=$(curl -s http://path/to/thing/with/zero_or_one)

case "$contents"
in
  '1') echo "it was one"
      ;;
  '2') echo "it was two"
      ;;
   *)  echo "it was something else
      ;;
esac

Bash Script that downloads a file and checks the value if 1 or 0

2 Answers2