til/bash-scripting/changing-the-modification-date-of-a-file.md

You can use touch to change modification date or time of a file:

touch -d 20210703 filename

# Set the times on a file to a specific date and time:
touch -t YYYYMMDDHHMM.SS filename

or use the times from a file to set the times on a second file:

touch -r filename filename2