On Linux, what is the output of: find . -print -mtime -10

On Linux, what is the output of: find . -print -mtime -10

• Only those files in & below the current directory with modification times greater than 10 days.
• Only those files in & below the current directory with modification times from exactly 10 days ago.
• Only those files in & below the current directory with modification times less than 10 minutes.
• All files found in & below the current directory. 

EXPLANATION

Expressions in "find" are evaluated left to right.  In the command given, "-print" is the first action in the expression, so each file found is printed.  Each file is evaluated against "-mtime -10", but no corresponding action follows the -mtime test.  Adding "-ls" to the end of the expression will make it clear, because those files with modification dates of less than 10 days will then be listed again, but in a different format.
Find and print everything below the current directory:

$ find  .  -print
.
./May
./May/file03
./May/file01
./May/file02
./May/file04
./June
./June/file03
./June/file01
./June/file02
./June/file04
./July
./July/file03
./July/file01
./July/file02
./July/file04

Test the "find" command, as given in the challenge:

$ find  .  -print  -mtime -10
.
./May
./May/file03
./May/file01
./May/file02
./May/file04
./June
./June/file03
./June/file01
./June/file02
./June/file04
./July
./July/file03
./July/file01
./July/file02
./July/file04

Append another action for the "find" command, "-ls", which will list  those files again that have modification times of less than 10 days:

$ find  .  -print  -mtime -10 -ls
.
2370731    4 drwxr-xr-x   5 dan      users        4096 Jul 14 21:11 .
./May
2506551    4 drwxr-xr-x   2 dan      users        4096 Jul 14 21:17 ./May
./May/file03
./May/file01
./May/file02
./May/file04
./June
2506552    4 drwxr-xr-x   2 dan      users        4096 Jul 14 21:18 ./June
./June/file03
./June/file01
./June/file02
./June/file04
./July
2506554    4 drwxr-xr-x   2 dan      users        4096 Jul 14 21:18 ./July
./July/file03
./July/file01
./July/file02
./July/file04

Understanding that the order of evaluation moves left to right is critical. If the specified action had been "-delete", instead of "-print", every file from the current directory down would have been deleted.
http://man7.org/linux/man-pages/man1/find.1.html
Warnings: Don't forget that the find command line is evaluated as an expression, so putting -delete first will make find try to delete everything below the starting points you specified.
See also:
http://pubs.opengroup.org/onlinepubs/9699919799/utilities/find.html
https://www.gnu.org/software/findutils/manual/html_node/find_html/find-Expressions.html#find-Expressions

SOURCE

http://man7.org/linux/man-pages/man1/find.1.html