On 09/14/2012 10:40 AM, Sparr wrote: > rename "s/\.tsv$/.csv/" *.tsv > > \ and/or $ may require escaping in your shell > Or just $ rename 's/tsv$/csv/g' *tsv "rename" is included with perl5 and later. Spreadsheets "like" the "csv" as an extension, but the built-in parsers will handle the tabs just as easily.