Useful linux find command

1. Find all files from the current directory that has file permission 777

find . -type f -perm 0777

2. Find all files from the current directory that do not have file permission 777

find . -type f ! -perm 0777

3. Find a single file called 'foo.txt' from the current directory and remove that

find . -type f -name "foo.txt" -exec rm -f {} \;

4. Find multiple files with '.txt' extension from the current directory and remove them

find . -type f -name "*.txt" -exec rm -f {} \;

5. Find files in the current directory that has been modified over last 5 days

find . -type f -mtime -5

6. Find files in the current directory that has been modified before last 5 days

find . -type f -mtime +5

7. Find files in the current directory that has been modified last 1 hour

find . -type f -mmin -60

8. Find files in the current directory that has been changed 1 hour ago

find . -type f -cmin +60

9. Find files in the current directory that has been modified exactly at 1 hour ago

find . -type f -mmin 60

10. Find files in the current directory that are larger than 2M

find . -type f -size +2M

11. Find files in the current directory that are smaller than 2M

find . -type f -size -2M

12. Find files in the current directory that are smaller than 3M but larger than 1M

find . -type f -size +1M -size -3M

I was heavily inspired by this blog post: https://www.tecmint.com/35-practical-examples-of-linux-find-command/