Send bash history to syslog

bash_history_syslog.txt

# Increase history size
export HISTSIZE=5000

# In the command below - every time a new prompt is issued (ie whenever you get through running a command), first the history is appended to the file, then it is cleared from the current shell's memory, then the current shell reloads the history from the file. 
#export PROMPT_COMMAND="history -a; history -c; history -r; ${PROMPT_COMMAND}"

It is easy to export bash commands to syslog which can be centralized and analyzed.

Add the following lines to bashrc.
[root@psj]# vim /etc/bashrc

PROMPT_COMMAND=$(history -a)
typeset -r PROMPT_COMMAND

function log2syslog
{
   declare command
   command=$BASH_COMMAND
   logger -p local1.notice -t bash -i -- "$USER : $PWD : $command"

}
trap log2syslog DEBUG