Persistent shell history

¶SETUP !

Want common loging across all accounts?:
    sudo touch /common_persistent_history
    sudo chmod 777 /common_persistent_history

Put the script somewhere:
    sudo mkdir /scripts
    sudo joe /scripts/configure_loghistory.sh ###copy-in the script below
    sudo chmod +x /scripts/configure_loghistory.sh

Now add in ALL USERS' .bashrc / .zsh, INCLUDING /root, at the end:
    source /scripts/configure_loghistory.sh 'label'
    # the extra 'label' string is optional, will show up in history too
    # ... useful when you have several containers, for example

¶THE SCRIPT !


#!/bin/bash
#__________________________________________
#__________________________________________
# via https://e2h.totalism.org/e2h.php?_=dev-phistory
# Revisions:
#—— 20200914 1900
#—— 20210811 1518
#—— 20231021 0310
#—— 20240413 1704
#—— 20240419 0433
#__________________________________________

echo
echo "| "
echo "| All commands are logged, see /common_persistent_history."
echo "| "
echo

# see https://www.baeldung.com/linux/bash-histsize-vs-histfilesize
HISTSIZE=1000000 #available within session
HISTFILESIZE=100000 #saved, available to next sessions


log_bash_persistent_history()
{
  [[ 
    $(history 1) =~ ^\ *[0-9]+\ +([^\ ]+\ [^\ ]+)\ +(.*)$
  ]]
  local date_part="${BASH_REMATCH[1]}"
  local command_part="${BASH_REMATCH[2]}"
  if [ "$command_part" != "$PERSISTENT_HISTORY_LAST" ]
  then
  #
  #mods:
  # $USER → user ID
  # $1 → optional label string (add when you 'source') ... can be useful for identifying containers etc
  # $$ → process ID of current shell, so you can pluck through even parallel instances
  #
    ### for this user
    echo $USER $1 $$ $date_part "|" "$command_part" >> ~/.persistent_history
    ### for all users
    echo $USER $1 $$ $date_part "|" "$command_part" >> /common_persistent_history

    export PERSISTENT_HISTORY_LAST="$command_part"
  fi
}

#--- --- --- --- --- --- --- --- --- --- --- --- --- 

log_zsh_persistent_history()
{
  if [[ $(history -i | tail -n1) =~ ^\ *[0-9]+\ +([^\ ]+\ [^\ ]+)\ +(.*)$ ]]; then
    local date_part="${match[1]}"
    local command_part="${match[2]}"
    if [ "$command_part" != "$PERSISTENT_HISTORY_LAST" ]; then
      echo $USER $1 $$ $date_part "|" "$command_part" >> ~/.persistent_history
      echo $USER $1 $$ $date_part "|" "$command_part" >> /common_persistent_history
      export PERSISTENT_HISTORY_LAST="$command_part"
    fi
  fi
}

#--- --- --- --- --- --- --- --- --- --- --- --- --- 


#
# Check if the shell is Bash or zsh
#
if [ -n "$BASH_VERSION" ]; then
    # If Bash, set PROMPT_COMMAND
    PROMPT_COMMAND="log_bash_persistent_history $1"
elif [ -n "$ZSH_VERSION" ]; then
    # zsh history is weird
    # help via https://unix.stackexchange.com/questions/647001/histtimeformat-change-is-not-working-at-all
    unalias history

    lbl="$1" #zsh can't see $1 within precmd() below
    precmd() {
       log_zsh_persistent_history "${lbl}"
    }
fi

export HISTTIMEFORMAT="%F %T  "

echo "__________ session" $USER $$ $date_part >> ~/.persistent_history
echo "__________ session" $USER $$ $date_part >> /common_persistent_history


#__________________________________________
#__________________________________________

¶INFO

Based on:
    https://eli.thegreenplace.net/2013/06/11/keeping-persistent-history-in-bash/.

License:
    super-lite version of 🔗comrade-license
    * you're probably seeing this as dcht00 gave you the link
    * with link, you're free to use it yourself, or on non-commerical, or commons-based commercial projects (as a cooperative)
    * do not post the code nor the link publicly
    * you are invited to share it directly to aligned people