The 'wall' command is used to send a message to all users on the system. You can put the text of what you want each user to see in a file, or you can type the message in line by line and then send it.
To send the contents of a file to each user, use the command:
wall filename
to send a message and type the contents at the same time, type:
wall
first line of text
second line of text
...
^D
to send it.
There is no traditional 'execute' command in Unix.
In Unix, use the 'man' command.
Use the command 'passwd'
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.
I don't know about a SEQ command, but the 'seq' command in Unix will print a sequence of numbers from first to last, with a given increment. Use the 'man seq' command to find out how to use it.
Use useradd command
Use the 'mkdir' command
For Unix/Linux, use the command 'cd /' For Windows, you can also use the same command or 'cd \'
The command is 'wall' (write all). In some systems it can only be executed by the administrator.
The -exec option executes the following command on a target of the 'find' command.
Use the 'grep' command
There is no standard 'format' command in Unix.