xb@dnxb:/tmp/aaa/webview$ tree -F -C -a .
.
├── .git/
├── ss/
├── y
└── !yes/

3 directories, 1 file
xb@dnxb:/tmp/aaa/webview$

xb@dnxb:/tmp/aaa/webview$ mkdir /tmp/aaa/webview2; cp -r -a !(!yes) /tmp/aaa/webview2
xb@dnxb:/tmp/aaa/webview$ l /tmp/aaa/webview2
total 16K
39331773 -rw-rw-r-- 1 xiaobai xiaobai ?    0 Jul  27 05:07 y
39331771 drwxrwxr-x 2 xiaobai xiaobai ? 4.0K Jul  27 05:43 .git/
39331772 drwxrwxr-x 2 xiaobai xiaobai ? 4.0K Jul  27 05:43 ss/
39331757 drwxrwxr-x 4 xiaobai xiaobai ? 4.0K Jul  27 05:44 ../
39331770 drwxrwxr-x 4 xiaobai xiaobai ? 4.0K Jul  27 05:44 ./
xb@dnxb:/tmp/aaa/webview$

xb@dnxb:/tmp/test/hello$ rm -r /tmp/test; shopt -s extglob; shopt -s dotglob; mkdir -p /tmp/test/hello; mkdir /tmp/test/hello2; cd /tmp/test/hello; mkdir '.git'; cp -r -a !(.git) /tmp/test/hello2/; ls -la /tmp/test/hello2/
cp: will not create hard link '/tmp/test/hello2/hello' to directory '/tmp/test/hello2/.'
cp: cannot copy a directory, '..', into itself, '/tmp/test/hello2/'
total 16
drwxrwxr-x 4 xiaobai xiaobai 4096 Jul  27 16:05 .
drwxrwxr-x 4 xiaobai xiaobai 4096 Jul  27 16:05 ..
drwxrwxr-x 2 xiaobai xiaobai 4096 Jul  27 16:05 .git
drwxrwxr-x 2 xiaobai xiaobai 4096 Jul  27 16:05 hello2
xb@dnxb:/tmp/test/hello$

xb@dnxb:/tmp/aaa/webview$ rm -r /tmp/aaa/webview2
xb@dnxb:/tmp/aaa/webview$ mkdir /tmp/aaa/webview2; cp -r -a !(.git) /tmp/aaa/webview2
cp: will not create hard link '/tmp/aaa/webview2/webview' to directory '/tmp/aaa/webview2/.'
cp: cannot copy a directory, '..', into itself, '/tmp/aaa/webview2'
xb@dnxb:/tmp/aaa/webview$ l /tmp/aaa/webview2
total 24K
39331773 -rw-rw-r-- 1 xiaobai xiaobai ?    0 Jul  27 05:07 y
39331774 drwxrwxr-x 2 xiaobai xiaobai ? 4.0K Jul  27 05:39 !yes/
39331775 drwxrwxr-x 2 xiaobai xiaobai ? 4.0K Jul  27 05:39 webview2/
39331771 drwxrwxr-x 2 xiaobai xiaobai ? 4.0K Jul  27 05:43 .git/
39331772 drwxrwxr-x 2 xiaobai xiaobai ? 4.0K Jul  27 05:43 ss/
39331757 drwxrwxr-x 4 xiaobai xiaobai ? 4.0K Jul  27 05:44 ../
39331770 drwxrwxr-x 6 xiaobai xiaobai ? 4.0K Jul  27 05:44 ./
xb@dnxb:/tmp/aaa/webview$

xb@dnxb:/tmp/aaa/webview$ rm -r /tmp/aaa/webview2
xb@dnxb:/tmp/aaa/webview$ mkdir /tmp/aaa/webview2; cp -r -a !(\.git) /tmp/aaa/webview2
xb@dnxb:/tmp/aaa/webview$ l /tmp/aaa/webview2
total 20K
39331773 -rw-rw-r-- 1 xiaobai xiaobai ?    0 Jul  27 05:07 y
39331774 drwxrwxr-x 2 xiaobai xiaobai ? 4.0K Jul  27 05:39 !yes/
39331771 drwxrwxr-x 2 xiaobai xiaobai ? 4.0K Jul  27 05:43 .git/
39331772 drwxrwxr-x 2 xiaobai xiaobai ? 4.0K Jul  27 05:43 ss/
39331757 drwxrwxr-x 4 xiaobai xiaobai ? 4.0K Jul  27 05:44 ../
39331770 drwxrwxr-x 5 xiaobai xiaobai ? 4.0K Jul  27 05:44 ./
xb@dnxb:/tmp/aaa/webview$

xb@dnxb:/tmp/aaa/webview$ rm -r /tmp/aaa/webview2
xb@dnxb:/tmp/aaa/webview$ mkdir /tmp/aaa/webview2; cp -r -a !(.git|.|..) /tmp/aaa/webview2
xb@dnxb:/tmp/aaa/webview$ l /tmp/aaa/webview2
total 16K
39331772 -rw-rw-r-- 1 xiaobai xiaobai ?    0 Jul  27 05:07 y
39331773 drwxrwxr-x 2 xiaobai xiaobai ? 4.0K Jul  27 05:39 !yes/
39331771 drwxrwxr-x 2 xiaobai xiaobai ? 4.0K Jul  27 05:43 ss/
39331757 drwxrwxr-x 4 xiaobai xiaobai ? 4.0K Jul  27 05:45 ../
39331770 drwxrwxr-x 4 xiaobai xiaobai ? 4.0K Jul  27 05:45 ./
xb@dnxb:/tmp/aaa/webview$

dotglob
    If set, Bash includes filenames beginning with a ‘.’ in the results of
    filename expansion.