Clean old log files and directories

clean_files.sh

#!/bin/bash

if [[ $# -lt 3 ]]
then
  echo "Usage: $0: <dir> <file pattern> <num days old>"
  exit 1
fi

dir=$1
file_pattern=$2
num_days=$3

find ${dir} -maxdepth 1 -name "${file_pattern}" -mtime +${num_days} | xargs -I {} bash -c 'echo "Removing {}"; rm -rf {};'