How do I see if my friends or coworkers are logged into the same Linux or BSD or UNIX (AIX, HP-UX, Apple OS X) server / workstation as I am from a command line?
How do I deny access to user account? Do I need to use /bin/false or /sbin/nologin to refuse a login?
Q. I’ve Debian Linux server and whenever someone trying to ssh into this box, they get an error as follows and server closes the connection:
System bootup in progress -please wait
How do I fix this problem and allow ssh login?