Utterly confused by the timestamp of the last item of command history vs. the last modified time of .bash_history
I configured all users with HISTTIMEFORMAT="%Y%m%dT%H%M%S%z "
Below I quote anonymized output from bash to commands date, history 12, and alias lis (i.e., "ls -Zilas")
someUser:~$ date
Wed Jul 23 07:12:56 PM PDT 2025
someUser:~$ history 12
1262 20250723T184953-0700 journalctl | grep -F "Jul 23" | grep DBus
1263 20250723T185529-0700 tail /home/anotherUser/.bash_history
1264 20250723T185726-0700 lis /home/anotherUser/.*
1265 20250723T190000-0700 vim /etc/bash.bashrc
1266 20250723T190115-0700 whereis history
1267 20250723T190138-0700 man history
1268 20250723T190229-0700 man -K bash
1269 20250723T191113-0700 journalctl | grep "Jul 23" | grep "DBus"
1270 20250723T191221-0700 history 10
1271 20250723T191240-0700 lis .bash*
1272 20250723T191256-0700 date
1273 20250723T191303-0700 history 12
someUser:~$ lis .bash*
45408 4 -rw-r--r-- 1 root root ? 46 Jul 9 19:21 .bash_aliases
45551 44 -rw------- 1 root root ? 43252 Jul 23 19:06 .bash_history
1213 4 -rw-r--r-- 1 root root ? 571 Apr 10 2021 .bashrc
NOTICE (time stamp in 24hr format 19:12:56)
someUser:~$ date
Wed Jul 23 07:12:56 PM PDT 2025
NOTICE last item of history 12
20250723T191303-0700 history 12
NOTICE
the last modified time .bash_history file is 20250723T1906
I expected .bash_history file to be synced to time of last issued command (i.e. 20250723T191303-0700)
WHAT IS THE RELATIONSHIP BETWEEN THE timestamp of the history command entries and the last modified time of bash_history file for the given user?
Is this working as it should?
Thanx