To find files by their access, modification, or creation date and time on a Linux or Unix-like system, you can use the find command with the -atime, -mtime, or -ctime options.
For example, to find files that were last accessed within the past 24 hours (86400 seconds), you can use the following command:
find /path/to/directory -atime -1
This will find all files in the /path/to/directory directory that were last accessed within the past 24 hours.
To find files that were last modified within the past 24 hours, you can use the -mtime option instead of the -atime option. For example:
find /path/to/directory -mtime -1
To find files that were last changed within the past 24 hours (including changes to the file's contents, metadata, or permissions), you can use the -ctime option. For example:
find /path/to/directory -ctime -1
You can also use the -amin, -mmin, or -cmin options to find files based on their access, modification, or creation time in minutes, rather than days.
For example, to find files that were last accessed within the past 60 minutes, you can use the following command:
find /path/to/directory -amin -60
You can find more information about the find command and its options in the find documentation or by running the find --help command.