Re: bash commands

[Ole-Egil Hvitmyren]

Daniel Danu wrote:

Hi,
Can you tell me please what $$ and $! mean ?

Thanks,
Dan


 


from man bash:

      $      Expands to the process ID of the shell.  In a () subshell, 
it expands to the process ID of the current shell, not the subshell.
      !      Expands to the process ID of the most recently executed 
background (asynchronous) command.


[EMAIL PROTECTED]:$ echo $$
426
[EMAIL PROTECTED]:$ echo $!
31584