Shell Programming and Scripting

Hi all

I have files in the following format:

01_anote1.pdf
01_bnote1.pdf
01_control1.pdf
01_ethics1.pdf
01_invoice1.pdf
01_invoice_21.pdf
20_quote_l1.pdf


I need to rename them to

01_anote.pdf
01_bnote.pdf
01_control.pdf
01_ethics.pdf
01_invoice.pdf
01_invoice_2.pdf
20_quote_l.pdf

That is, remove the 1 before the extension. Your help ppreciated.

Thanks

Lucas

Try this first without the coloured part, to be shure the mv commands are correct:

Code:

ls *.pdf | sed 's/\(.*\)1\(\..*\)/mv & \1\2/' | sh

Regards

Try..

@lmatlebyane,

Try this,

The following command rename the files in the directory.

rename 1.pdf .pdf *1.pdf

This one replace all the contents in the files whichever filename ends with 1.pdf

sed 's/1.pdf/.pdf/g' *1.pdf

Thanks, tried all solutions and they all work!

Can someone please explain this command

well, I can try explaining..

ls *.pdf - its clear i guess.

now..
this matches anything1.anything i.e the filename like 01_anote1.pdf

and replacing this by mv anything1.anything anything.anything

here - "anything" before dot means filename and "anything" after dot means extntion.

so the output is mv 01_anote1.pdf 01_anote.pdf which is redirecting to the shell to execute the mv command.

now in sed... & is used to replace what is matched previously.
\1 \2 are used to recall the saved regex by escaped paranthesis.

as far as i know m you can have max 9 save regex/strings.

@Franklin52 or other : if there is something else in your command please share.