The time-related fields of struct stat are as follows, man lstat:

• atime: Time when file data last accessed.
• mtime: Time when file data last modified.
• ctime: Time when file status was last changed
• birthtime or btime: Time of file creation. Only set once when the file is created.

1. To modify access time (atime):
   touch -a -t CCYYMMDDhhmm.SS file.txt (example: 201811251820.52 = 25 novembre 2018 à 18 h 20 min 52 s)

2. To modify modification time (mtime) and time of file creation (btime):
   touch -m -t CCYYMMDDhhmm.SS file.txt

3. To modify only the time of creation/birth (btime):
   SetFile -d "11/25/2018 18:20:52" file.txt

• touch
• SetFile