As i am working in unix environment so i have an logs that is created by my application at the following location that is
/opt/app/glac/current/servers/ops/logs
inside the logs directory there are different kinds of logs(that is the file having extension as .log ) have been created ,can you please advise i want to write a shell script such that that script will ask the user the number of day such that if user enter the value 3 so in that case it will delete all the logs that are 3 days old , lets say if date is 19 dec 2015 and if user enter the value as 3 then it will delete the logs including of 16 dec also it will only keep the logs of 17,18 and 19 dec only
please advise what will be the shell script to achieve this 