Editor: gedit

gedit is a GUI editor available with Gnome on Linux.

By default, gedit uses Unix line endings, so this should not need changing.

Tabs can be changed into spaces in Edit / Preferences / Editor by selecting the "insert spaces instead of tabs" tickbox.

Also useful

• Edit / Preferences / View has a "Display line numbers" tickbox which can be very helpful when error-hunting

• gedit also has colour-coded highlighting for all sorts of things including perl. It can be activated either by going to View / Highlight Mode / Scripts while editing a file, or by saving your file with an extension such as .plx which gedit recognises as being a perl script.