=> Creating binary package /data/scratch/shells/standalone-tcsh/work/.packages/standalone-tcsh-6.20.00nb2.tgz pkg_add: Failed to write bin/tcsh for standalone-tcsh-6.20.00nb2: Could not unlink pkg_add: Couldn't remove //bin/tcsh pkg_add: Couldn't remove //usr/share/man/man1/tcsh.1 pkg_add: 1 package addition failed