===== AIX and command history =====

The default size of the history file is 500 lines for root and 128 lines for other users.\\
The history file doesn't record what date/time commands were run.

To customize you .sh_history file use:
  export HISTSIZE=10000
  export EXTENDED_HISTORY=ON
  export HISTDATEFMT=%d/%m/%Y %H:%M:%S


**Careful** Before putting some settings in read-only, be sure to have no place (for example user which try to override these variables in .profile, or scripts) to reload these variables, else your login will stop.

Put there variable in readonly for all users in /etc/profile:
  typeset -r HISTSIZE
  typeset -r EXTENDED_HISTORY
  typeset -r HISTDATEFMT
 
These will increase the history size to 10,000 lines and record date/time stamps for each command run.   Use the "-t" flag with the history command to see the date/time stamps next to each command.

<cli prompt='#'>
# history -t
58 2009/08/26 13:47:50 :: view .profile
59 2009/08/26 13:48:21 :: history -t
</cli>

To log centralize all commands, use syslog facility:

=== Solution 1 ===

Add into /etc/profile

  function history_to_syslog
  {
  declare cmd
  cmd=$(fc -ln -0)
  logger -p local7.notice — SESSION = $$, CMD =$cmd
  }
  trap history_to_syslog DEBUG

  syslog_exist=$(ps -ef |grep "tail -0f $HISTFILE"|grep -v grep |wc -l)
  if [ $syslog_exist -eq 0 ]
  then
  tail -0f $HISTFILE| while read linha
  do
  text=`echo "WHO = $LOGNAME, CMD ="`
  logger -p local7.notice -t $text $linha
  done &
  fi

  function log2syslog
  {
   declare command
   command=$(fc -ln -0)
   logger -p local1.notice -t bash -i — $USER : $command
  }
  trap log2syslog DEBUG


=== Solution 2 ===

<cli prompt='#'>
# cat /etc/profile
</cli>

  . /sbin/log.sh

<cli prompt='#'>
# cat /sbin/log.sh
</cli>
<code>
function log
{
if [[ $- = *i* ]]; then
  if [[ $LOGNAME = !(nagios|*adm) ]] ; then
    typeset TTY=`who am i | awk '{print $2}'`
    if [[ $TTY = @(pts*) ]] ; then
      typeset -i STAT=$?
      typeset X=$(fc -t -n -0)
      logger -p daemon.info -t "$LOGNAME $$" $TTY Status $STAT PWD $PWD ${X#  }
    fi
  fi
fi
}
trap log DEBUG
</code>  

We left out all *adm users, as SAP with Java normally uses hundreds of embedded profiles and therefore the switching to that one user took sometimes 5 seconds which gave us quite a pain.

==== Convert .sh_history in human readable file ====

Will convert epoch date, and sort by date
<code>
alias TS='_TS(){ /opt/freeware/bin/date --date="@$1" +%Y/%m/%d-%T ; }; _TS'
strings -n1 .sh_history | rev| while read i j
do
timest=$(echo $i | sed 's/#/\ /g' | awk '{print $2}' | rev)
end=$(echo $j | rev)
echo "$timest : $end"
done > /tmp/hist_file.txt
sort /tmp/hist_file.txt |  while read a b
do
echo $(TS $a) "$b"
done
</code>

==== Bash profile example ====

<code>
# Will Give me ip of person logged in
WHOAMI=`who -m | cut -d '(' -f 2| cut -d ')' -f1`  
# Will give me tty ID
MYTTY=`who -m | awk '{print $2;}' | cut -d '/' -f2`
DATE=`date +"%Y_%m_%d_%H%M%S"`
DAY=`date +"%Y_%m_%d"`
shopt -s histappend
mkdir -p $HOME/HISTORY/${WHOAMI}/${DAY}
touch $HOME/HISTORY/${WHOAMI}/${DAY}/.HIST_${MYTTY}_${DATE}
export HISTTIMEFORMAT='%F %T '
export HISTFILESIZE=100
export HISTSIZE=100
# stores history file per terminal
export HISTFILE=$HOME/HISTORY/${WHOAMI}/${DAY}/.HIST_${MYTTY}_${DATE}
export PS1='[\[\e[4;32m\]\u@\h\[\e[0m\] \[\e[1;36m\]$PWD\[\e[0m\]]\! $'
# Updates the HISTFILE at real time i.e. when user presses enter
export PROMPT_COMMAND="history -a; history -c; history -r; ${PROMPT_COMMAND}"
history -r $HISTFILE
</code>

==== KSH profile example ====

<cli prompt='#'>
[root@aixsrv]/root # tail -100 /etc/profile
...
[[ $EXTENDED_HISTORY != 'ON' ]]   && export EXTENDED_HISTORY=ON
[[ $HISTSIZE -ne 10000 ]]         && export HISTSIZE=10000
[[ $HISTTIMEFORMAT != '%F %T ' ]] && export HISTTIMEFORMAT="%F %T "

EDITOR=/usr/bin/vi
HOSTNAME=$(/usr/bin/hostname)
PS1="[\$LOGNAME@\$HOSTNAME]\$PWD# "

export EDITOR HOSTNAME PS1

export MANPATH=$MANPATH:/usr/share/man:/usr/lpp/X11/man:/opt/freeware/man

export DSM_LOG=/tmp     # centralize all TSM logs dsmj.log

alias ll='ls -lsa'

if tty >/dev/null 2>&1
then
  From="`/usr/bin/who am i | awk '{ print $1 }'`"
  To="`/usr/bin/whoami | awk '{ print $1 }'`"
  File="$From:$To"
  if [ ! -d /var/adm/history/$To ]
    then
    mkdir -p /var/adm/history/$To
    chmod 700 /var/adm/history/$To
  fi
  [[ $HISTFILE != "/var/adm/history/$To/.sh_history.$File" ]] &&  export HISTFILE=/var/adm/history/$To/.sh_history.$File
fi

trap 1 2 3
</cli>