As an alternative to using bash_history, to capture every command entered in the shell by yourself and save it to file you could use something like the trap command in a script or function and place that code in .bashrc.

Fortunately, exactly the script you want was provided by Richard Hansen a while ago in this answer, and his script copies every command entered into bash and sends them (with a timestamp) to a file called .command_log by default. Once you have placed his script into your .bashrc and have launched terminal, Richard's script writes the commands to .command_log as soon as they are executed, unlike the bash_history feature, which only writes to the file after the terminal is closed.

Richard's script will record your commands like this in .command_log (although you will be using different commands to me):

2012-10-02T18:02:11+0100 /dev/pts/2 gksudo truecrypt

2012-10-02T21:52:03+0100 /dev/pts/2 xrandr -s 1280x1024

2012-10-03T00:16:52+0100 /dev/pts/2 mount

2012-10-03T00:17:12+0100 /dev/pts/2 udisks --unmount /dev/sdb1

2012-10-03T00:17:46+0100 /dev/pts/2 udisks --detach /dev/sdb

I have been using it for a while and find that Richard's script is very useful; you can even grep the .command_log and search for anything you want:

grep -i udisks .command_log 

So, I think this is probably what you want if you need to record every single thing typed into bash; I find it incredibly useful.