[Help-bash] 'bash' in 'bash' + 'set +o history'

[calandraaspirate]

Hello

I wonder if anyone can point out the reason for the following behaviour:

1. 'set +o history' in '/etc/profile'
2. 1st 'bash' session respects this setting, no command history file is 
written
3. From the 1st 'bash' session a 2nd one is started (parent process of 
the 2nd one is the 1st)
4. The 2nd session logs history

Although, I hoped it was not. Why? Thanks!


Cheers
C.

---

address@hidden ~
$ tail /etc/profile
  profile_d zsh
elif [ ! "x${POSH_VERSION}" = "x" ]; then
  : # [ "${PS1-null}" = "null" ] || PS1="$ "
else
  : # [ "${PS1-null}" = "null" ] || PS1="$ "
fi

# export PROFILEREAD PATH ORIGINAL_PATH MANPATH INFOPATH USER TMP TEMP 
PRINTER HOSTNAME PS1 SHELL tmp temp
export PROFILEREAD PATH ORIGINAL_PATH INFOPATH USER TMP TEMP PRINTER 
HOSTNAME PS1 SHELL
set +o history

address@hidden ~
$ man bash
...
       set [--abefhkmnptuvxBCEHPT] [-o option-name] [arg ...]
       set [+abefhkmnptuvxBCEHPT] [+o option-name] [arg ...]
...
              -o option-name
...
                      history Enable command history, as described above 
under HISTORY.  This option is on by default in interactive shells.
...
                      If  -o  is  supplied with no option-name, the 
values of the current options are printed.  If +o is supplied with no 
option-name, a series of set commands to recreate
                      the current option settings is displayed on the 
standard output.
...

address@hidden ~
$ set -o | grep history
history         off

address@hidden ~
$ bash

address@hidden ~
$ set -o | grep history
history         on

address@hidden ~
$ exit
exit

address@hidden ~
$ set -o | grep history
history         off

address@hidden ~
$ cat .bash_history
set -o | grep history
exit

-------------------------------------------------
This free account was provided by VFEmail.net - report spam to address@hidden

ONLY AT VFEmail! - Use our Metadata Mitigator to keep your email out of the 
NSA's hands!
$24.95 ONETIME Lifetime accounts with Privacy Features!  
15GB disk! No bandwidth quotas!
Commercial and Bulk Mail Options!