Hello, Thank you for all your suggestions. I have finally managed to do what I wanted.
There was several reasons: 1) the different -name options of find have to be enclosed in protected bracket \( ... \) 3) the need to use the eval function 2) in a script, one need to protect the different special characters from being interpreted before the final command. For exemple, I have to write \\\( in order to obtain \(. The problem, is that I don't really understand what happens, why I nedd to put 3\ and not 2 or 4, but the main point is that it now works. my new script is : TYPELIST="._bc ._ch ._cl ._cm ._df ._dl ._ev ._fl ._gr ._hl ._is ._mb ._mm ._mp ._ov ._pr ._sn ._sy ._ti ._tr ._sf" Extension=$(echo ${TYPELIST} | sed -e"s:[ ][.]:' -delete \\\) -o \\\( -iname '*.:g" | sed -e"s:^[.]:\\\( -iname '*.:" | sed -e"s:$:' -delete \\\):") MaCommande="find . ${Extension}" eval ${MaCommande} -- View this message in context: http://www.nabble.com/Pb-with-bash-script-under-cygwin-t1810878.html#a4993126 Sent from the Cygwin Users forum at Nabble.com. -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/