touch

Create files and set access/modification times. More information: https://manned.org/man/freebsd-13.1/touch.

touch path/to/file1 path/to/file2 …

Set the file [a]ccess or [m]odification times to the current one and don't [c]reate file if it doesn't exist:

touch -c -a|m path/to/file1 path/to/file2 …

Set the file [t]ime to a specific value and don't [c]reate file if it doesn't exist:

touch -c -t YYYYMMDDHHMM.SS path/to/file1 path/to/file2 …

Set the file time of a specific file to the time of anothe[r] file and don't [c]reate file if it doesn't exist:

touch -c -r ~/.emacs path/to/file1 path/to/file2 …