我正在尝试在linux系统中安装Hadoop2.6.5，但找不到包含config和env文件的etc文件夹。我已经解开了tar文件。hadoop文件夹中列出的文件和目录是

/home/tcs>cd hadoop
/home/tcs/hadoop>ls -ltr
total 192

-rw-rw-r--  1 tcs tcs  1366 Jul 23  2015 README.txt
-rw-rw-r--  1 tcs tcs 14978 Sep 20  2016 NOTICE.txt
-rw-rw-r--  1 tcs tcs 84853 Sep 20  2016 LICENSE.txt
-rw-rw-r--  1 tcs tcs 12091 Sep 20  2016 BUILDING.txt
-rw-rw-r--  1 tcs tcs 18121 Sep 20  2016 pom.xml
drwxrwxr-x  3 tcs tcs  4096 Mar  9 18:00 hadoop-project
drwxrwxr-x  3 tcs tcs  4096 Mar  9 18:00 hadoop-assemblies
drwxrwxr-x  3 tcs tcs  4096 Mar  9 18:00 hadoop-yarn-project
drwxrwxr-x 10 tcs tcs  4096 Mar  9 18:00 hadoop-common-project
drwxrwxr-x  2 tcs tcs  4096 Mar  9 18:00 hadoop-dist
drwxrwxr-x  2 tcs tcs  4096 Mar  9 18:00 hadoop-client
drwxrwxr-x  3 tcs tcs  4096 Mar  9 18:00 dev-support
drwxrwxr-x  9 tcs tcs  4096 Mar  9 18:00 hadoop-mapreduce-project
drwxrwxr-x  2 tcs tcs  4096 Mar  9 18:00 hadoop-project-dist
drwxrwxr-x  6 tcs tcs  4096 Mar  9 18:00 hadoop-hdfs-project
drwxrwxr-x  2 tcs tcs  4096 Mar  9 18:00 hadoop-build-tools
drwxrwxr-x 15 tcs tcs  4096 Mar  9 18:00 hadoop-tools
drwxrwxr-x  2 tcs tcs  4096 Mar  9 18:00 hadoop-minicluster
drwxrwxr-x  3 tcs tcs  4096 Mar  9 18:00 hadoop-maven-plugins

请帮忙