pacman -Su
:: Starting full system upgrade...
resolving dependencies... done.
looking for inter-conflicts... done.

Targets: bash-3.2.025-4  heimdal-1.0.1-2  openssh-4.7p1-6

Total Package Size:   3.33 MB

Proceed with installation? [Y/n]
checking package integrity... done.
cleaning up... done.
(3/3) checking for file conflicts                   [#####################] 100%
error: could not prepare transaction
error: failed to commit transaction (conflicting files)
bash: /etc/profile exists in filesystem

errors occurred, no packages were upgraded.