I have about 90 photo files in a directory.
How do I change them from the capital letters format to the small one,
that is, from "CIMGxxxx.JPG" to the "cimgxxxx.jpg" format.
I am not a programer, and sorry for a very basic question for the experience people of this newsgroup.
Any suggestion will be appreciated.

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On 03 Nov 2018, Aelius Gallus wrote:

How do I change them from the capital letters format to the small one,
that is, from "CIMGxxxx.JPG" to the "cimgxxxx.jpg" format.

First, make a copy of the directory, in case whatever you try messes
things up somehow. Even if you think that you changed the names
correctly, take a look at a couple of photographs afterward to be sure.

I'd probably cd into the directory with the photographs then do
something like,

for i in * ; do mv "$i" /tmp/photo ; mv /tmp/photo "`echo "$i" | tr '[A-Z]' '[a-z]'`" ; done

I hope that helps.

-- Mark

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Mark Carroll <[email protected]> wrote:

On 03 Nov 2018, Aelius Gallus wrote:

How do I change them from the capital letters format to the small one,
that is, from "CIMGxxxx.JPG" to the "cimgxxxx.jpg" format.

First, make a copy of the directory, in case whatever you try messes
things up somehow. Even if you think that you changed the names
correctly, take a look at a couple of photographs afterward to be sure.

I'd probably cd into the directory with the photographs then do
something like,

for i in * ; do mv "$i" /tmp/photo ; mv /tmp/photo "`echo "$i" | tr
'[A-Z]' '[a-z]'`" ; done

I hope that helps.

-- Mark

Your incantation worked like a charm!. I don't know how you figured it out because it is very long and complicated for me to remember. I copied it
into a file, so I will just copy and paste it next time I need it.
Thank you Mark.
Aelius

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On 03 Nov 2018, Aelius Gallus wrote:

Your incantation worked like a charm!. I don't know how you figured it out because it is very long and complicated for me to remember. I copied it
into a file, so I will just copy and paste it next time I need it.

Great, thank you for letting us know it that worked for you. You can
find out about the kind of approach I used from "Unix tools" types of
courses from maybe thirty years ago. Then people started using Perl for
this kind of thing, now probably Python, but, broadly: if it's simple to describe then the older standard command-line BSD tools can probably be
put together somehow to make it happen.

-- Mark

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Mark Carroll <[email protected]> wrote:

Great, thank you for letting us know it that worked for you. You can
find out about the kind of approach I used from "Unix tools" types of
courses from maybe thirty years ago. Then people started using Perl for
this kind of thing, now probably Python, but, broadly: if it's simple to describe then the older standard command-line BSD tools can probably be
put together somehow to make it happen.

-- Mark

Thank you for letting us know your sources and adding a short history of
Unix related tools. By the way, things have simplified by making the file, where the suggested commands had been copied, executable and placed in my $PATH.
Best regards,
Aelius

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