How to fix modification timestamp for files with 1970-01-01 modification date

If the modification timestamp of some files is set to 0 (ie 1970-01-01), this is how you can fix it by setting all the modification timestamps to the current time & date using touch:

find . ! -newermt 1970-01-02 -exec touch {} \;

Also see the related post on: How to find files with 1970-01-01 modification time