Newbie alert!

Although I've done much programming in the (distant) past I would
appreciate five minutes of someone's time to help me get started with
PowerShell.

What I would like to do is pretty simple -
Process each file in a directory using lame to produce a mp3 as follows
lame -h -b 320 4RR_SYN69CD_track01.wav mp3\4RR_SYN69CD_track01.mp3

I'm not sure whether to try to get all the filenames in the directory
and process them to produce a complete script to run against the
directory or whether to try to process the files one at a time - could I
do this starting with Get-ChildItem?

Or am I looking at the wrong tool for the job?

TIA - Martin

Assuming that you have lame.exe in the current directory and that you've
already created the mp3 subfolder the following should work:

gci *.wav | %{ $in = $_.Name; $out =
[system.io.path]::ChangeExtension($in, "mp3"); ./lame -h -b 320 $in
mp3/$out }

//andrew


Axolotl Q Cleaver wrote:
> Although I've done much programming in the (distant) past I would
> appreciate five minutes of someone's time to help me get started with
> PowerShell.
>
> What I would like to do is pretty simple -
> Process each file in a directory using lame to produce a mp3 as follows
> lame -h -b 320 4RR_SYN69CD_track01.wav mp3\4RR_SYN69CD_track01.mp3
>
> I'm not sure whether to try to get all the filenames in the directory
> and process them to produce a complete script to run against the
> directory or whether to try to process the files one at a time - could I
> do this starting with Get-ChildItem?
>
> Or am I looking at the wrong tool for the job?
>
> TIA - Martin

This is slightly shorter:

gci *.wav | %{ ./lame -h -b 320 $_.Name "mp3/$($_.Name -replace
'\.wav$','.mp3')" }

Andrew Savinykh wrote:
> Assuming that you have lame.exe in the current directory and that you've
> already created the mp3 subfolder the following should work:
>
> gci *.wav | %{ $in = $_.Name; $out =
> [system.io.path]::ChangeExtension($in, "mp3"); ./lame -h -b 320 $in
> mp3/$out }
>
> //andrew
>
>
> Axolotl Q Cleaver wrote:
>> Although I've done much programming in the (distant) past I would
>> appreciate five minutes of someone's time to help me get started with
>> PowerShell.
>>
>> What I would like to do is pretty simple -
>> Process each file in a directory using lame to produce a mp3 as follows
>> lame -h -b 320 4RR_SYN69CD_track01.wav mp3\4RR_SYN69CD_track01.mp3
>>
>> I'm not sure whether to try to get all the filenames in the directory
>> and process them to produce a complete script to run against the
>> directory or whether to try to process the files one at a time - could
>> I do this starting with Get-ChildItem?
>>
>> Or am I looking at the wrong tool for the job?
>>
>> TIA - Martin

TVM for both working examples - now I just have to figure out how they
work!!

I've added this to the beginning of the script:
if (!(Test-Path MP3 -PathType Container))
{
new-item -path . -name MP3 -type directory
}

The thing that remains to puzzle me is this:
the path includes c:\windows\system32 which is where lame.exe and its
associated .dll are kept - why does lame have to be in the current
directory?

Sorry to answer your helpful reply with another question!

Best wishes - Martin

Andrew Savinykh wrote:
> This is slightly shorter:
>
> gci *.wav | %{ ./lame -h -b 320 $_.Name "mp3/$($_.Name -replace
> '\.wav$','.mp3')" }
>
> Andrew Savinykh wrote:
>> Assuming that you have lame.exe in the current directory and that
>> you've already created the mp3 subfolder the following should work:
>>
>> gci *.wav | %{ $in = $_.Name; $out =
>> [system.io.path]::ChangeExtension($in, "mp3"); ./lame -h -b 320 $in
>> mp3/$out }
>>

Axolotl Q Cleaver wrote:
> The thing that remains to puzzle me is this:
> the path includes c:\windows\system32 which is where lame.exe and its
> associated .dll are kept - why does lame have to be in the current
> directory?
It doesn't. I didn't know that you have in on the path, so I assumed
it's in the current folder. If it is on the path, just change './lame'
to 'lame' - should work.