(cherry picked from commit cbd31328a61252f253aa2bcdb9cad70f7876d231) Conflicts: hadoop-common-project/hadoop-common/src/site/markdown/CommandsManual.md hadoop-common-project/hadoop-common/src/site/markdown/UnixShellGuide.md
(cherry picked from commit cbd31328a61252f253aa2bcdb9cad70f7876d231) Conflicts: hadoop-common-project/hadoop-common/src/site/markdown/CommandsManual.md hadoop-common-project/hadoop-common/src/site/markdown/UnixShellGuide.md