There isn't a generic Unix command to connect to a database. The actual commands are based on the database package you are using, such as Oracle, SyBase, etc. They each have their own commands for gaining access to the database.
Under Windows the command is mstsc.Microsoft terminal server connection
Unix files do not rely on extensions, therefore there is no command to find them.
There is no traditional 'execute' command in Unix.
Telnet allows clients to connect to other remote systems.
using touch command of UNIX. syntax touch <filename> will create dummy regular file.
There is no standard 'format' command in Unix.
The TPUT utility uses the terminfo database to make the values of terminal-dependent capabilities and information available to the shell
Use the 'uname -a' command. It reports on the Unix system, version, machine name, amongst other things.
The 'CD' command is not standard for Unix. The 'cd' command, however, will change directories (folders). It is a means of navigating the Unix file system.
ssh or telnet in company environment mostly we used ssh and there is one tool called putty, through putty we can connect.
In Unix, use the 'man' command.
Your login shell can be changed by using the chsh or ypchsh command.