batch script - run command on each file in directory

Question

I need to convert some xls files into xlsx files. I can successfully convert one xls file into xlsx by running this command into cmd prompt (windows):

ssconvert inputFileName.xls outputFileName.xlsx 

(ssconvert is a Gnumeric's command-line utility that can convert between different spreadsheet file formats)

I'd like to write a batch file that FOR EACH file in a specified directory runs the command I wrote above, using the current file name both for input and for output filename.

For example, if I have this set of files:

c:\directory\file1.xls c:\directory\file2.xls c:\directory\file3.xls 

the output should be

c:\directory\file1.xlsx c:\directory\file2.xlsx c:\directory\file3.xlsx 

so the batch pseudo code should be something like

directory = c:\directory\ for (fileName in directory)     ssconvert fileName.xls fileName.xlsx 

Can anyone help me?

Answer 1

for /r %%v in (*.xls) do ssconvert "%%v" "%%vx" 

a couple have people have asked me to explain this, so:

Part 1: for /r %%v in (*.xls)

This part returns an array of files in the current directory that have the xls extension. The %% may look a little curious. This is basically the special % character from command line as used in %PATH% or %TEMP%. To use it in a batch file we need to escape it like so: %%PATH%% or %%TEMP%%. In this case we are simply escaping the temporary variable v, which will hold our array of filenames.

We are using the /r switch to search for files recursively, so any matching files in child folders will also be located.

Part 2: do ssconvert "%%v" "%%vx"

This second part is what will get executed once per matching filename, so if the following files were present in the current folder:

c:\temp\mySheet.xls, c:\temp\mySheet_yesterday.xls, c:\temp\mySheet_20160902.xls

the following commands would be executed:

ssconvert "c:\temp\mySheet.xls" "c:\temp\mySheet.xlsx" ssconvert "c:\temp\mySheet_yesterday.xls" "c:\temp\mySheet_yesterday.xlsx" ssconvert "c:\temp\mySheet_20160902.xls" "c:\temp\mySheet_20160902.xlsx"