Hi, On Thu, May 24, 2018 at 11:11 PM, Etienne d'Hautefeuille <sagoum.kakoum@xxxxxxxxx> wrote: > > #try a diff > git difftool --dir-diff 4cb98b4a307ce97d9e6b8e4b03211fa5ca8af7e7 > 0244799661b993b1f78fa5afb621de3fe4c4a39c > fatal: impossible d'ouvrir '/tmp/git-difftool.UQ4mqo/left/jenkins.war' en > écriture: Permission non accordée You should use LANG=C so that people can understand the error message. Also git difftool launches another program that will actually perform the diff. It looks like it is bcompare on your setup. Did you try with another program?