find / -type f -name "file.txt"
# Files that have SUID bit set and are owned by root
find / -perm -4000 -user -4000 2> /dev/null-mmin -10: Files modified less than 10 mins ago
-mmin + 1 -mmin -5: Files modified more than 1 min ago and less than 5 mins ago
-mtime +20: More than 20 days
-amin -atime: Accessed Time
-cmin -ctime: Modified Time
-size +5M: Files greater than 5 MBs
k: Kilobytes
G: Gigabytes
-empty : Find empty files
-perm 777: Have permission 777
-perm -755: Have at least 755 permission
-maxdepth 1: Scan only one level deep
-exec rm -rf {} +: Execute command (rm -rf file1; rm -rf file2;)
-exec rm -rf {} \;: Execute command (rm -rf file1 file2)