sleep a while loop based on output from a function

问题

Need your help with the following. My .sh is as follows.

 getfunc (){

 if [condition 1]
 then
 echo "NOK" >flag
 else
 echo "OK" >flag
 fi
 }

 while IFS=" " read -r var1
 do
 getfunc
 if [ $flag -eq OK ]
 then
 "print 1"
 else 
 "sleep for sometime"
 fi
 done <file

I don't know how to tell while to keep trying in regular intervals, till it gets OK from getfunc.

Any help is greatly appreciated. thanks.

回答1:

  until [[condition]]
  do
  echo "sleeping"
  sleep 5
  done

来源：https://stackoverflow.com/questions/47807474/sleep-a-while-loop-based-on-output-from-a-function