Wait for bash background jobs in script to be finished

To maximize CPU usage (I run things on a Debian Lenny in EC2) I have a simple script to launch jobs in parallel:

#!/bin/bash

for i in apache-200901*.log; do echo "Processing $i ..."; do_something_important; done &
for i in apache-200902*.log; do echo "Processing $i ..."; do_something_important; done &
for i in apache-200903*.log; do echo "Processing $i ..."; do_something_important; done &
for i in apache-200904*.log; do echo "Processing $i ..."; do_something_important; done &
...

I'm quite satisfied with this working solution, however I couldn't figure out how to write further code which only executed once all of the loops have been completed.

Is there a way to get control of this?

From stackoverflow

• There's a bash builtin command for that.

     wait [n ...]
            Wait for each specified process and return its termination  sta‐
            tus.   Each  n  may be a process ID or a job specification; if a
            job spec is given, all processes  in  that  job’s  pipeline  are
            waited  for.  If n is not given, all currently active child pro‐
            cesses are waited for, and the return  status  is  zero.   If  n
            specifies  a  non-existent  process or job, the return status is
            127.  Otherwise, the return status is the  exit  status  of  the
            last process or job waited for.
  

  mark : That was quick and solved my problem, well earned, thanks!