Telnet allows clients to connect to other remote systems.
ssh or telnet in company environment mostly we used ssh and there is one tool called putty, through putty we can connect.
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.
Example of multi-user OS include Unix server & thin client.. In the Unix server, multiple remote users have the access to the Unix shell at the same time. In the case of thin client, multiple X WINDOW sessions are spread across various terminals. These terminals are powered by a single machine.
There is no traditional 'execute' command in Unix.
There is no standard 'format' command in Unix.
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.
In Unix, use the 'man' command.
There isn't a generalized way from the command line in Unix to connect to a socket; there are socket libraries you can utilize from within the 'C' language to assign, bind, and connect to a specific socket address. For example: int connect(int s, const struct sockaddr *name, int namelen); In Linux, you can use the 'socket' command to connect to a specific socket as: socket ?options? host port Where the host is the IP address and the port is the port number (giving you the socket address).
The "who" command.
cat /proc/version The above answer will only work on certain systems. For most Unix systems, use the 'uname' command to get the Unix version. AIX uses the oslevel command.
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