Use Linux commnad wall to broadcast message with nobanner
1. wall -n
2. enter your message to broadcast
3. Ctrl+D
reference
https://www.howtoforge.com/linux-wall-command/
samba enable FS share under SELinux on CentOS
list context of files or folders for selinux mandatory protection $ ls -lZd / 1. external USB disk $ getsebool -a | grep fusefs $ setsebool -P samba_share_fusefs on 2. nfs disk $ s etsebool -P samba_share_nfs on 3. create and enable home dirs $ getsebool -a | grep samba $ setsebool -P samba_create_home_dirs on $ setsebool -P samba_enable_home_dirs on 4. global share ACL $ setsebool -P samba_export_all_ro on $ setsebool -P samba_export_all_rw on
