# Delete files older then 5 days
find /u01/app/oracle/diag/rdbms/firds/FIRDS/trace/* -mtime +5 -exec rm {} \;

# Redirect output as sudo user
#1 Run a shell with sudo and give the command to it by using the -c option:
sudo sh -c 'ls -hal /root/ > /root/test.out'
#2 Use sudo tee (if you have to escape a lot when using the -c option):
sudo ls -hal /root/ | sudo tee /root/test.out > /dev/null