Routing mystery/misunderstanding

Please be careful with respect to *NIX file timestamps –

  • If, the “noatime” mount option then, the timestamp related to “Time Of Day last accessed
    ” will not be written …

 > LANG=C stat /etc/sysctl.d/70-yast.conf 
  File: /etc/sysctl.d/70-yast.conf
  Size: 109             Blocks: 8          IO Block: 4096   regular file
Device: 802h/2050d      Inode: 4064905     Links: 1
Access: (0644/-rw-r--r--)  Uid: (    0/    root)   Gid: (    0/    root)
Access: 2021-07-14 15:34:27.359950528 +0200
Modify: 2021-07-14 15:34:04.195950844 +0200
Change: 2021-07-14 15:34:04.195950844 +0200
 Birth: 2020-08-18 15:20:44.268000052 +0200
 > 

The only indication of when the file was last read, are the timestamps related to the “systemd-sysctl.service” …