After installing Nexus Repository Manager OSS 3 I do not see option Artifact Upload to upload artifacts through web page.
In Nexus Repository Manager OS
To use mvn deploy:deploy-file, must add ~./m2/settings.xml
nexus-repo
admin
admin123
command:
mvn deploy:deploy-file -DgroupId=com.example \
-DartifactId=my-app \
-Dversion=2.0.0 \
-Dpackaging=jar \
-Dfile=my-app.jar \
-DgeneratePom=true \
-DrepositoryId=nexus-repo \
-Durl=http://localhost:8081/repository/maven-releases/