your questions makes zero sense
enter
Alt and Ctrl key are special keys. Then can be used as quick menu button or can be used to execute a program. You can also use them to do a shortcut key command.
the command is not available it is used in windows.its means at time execute command
There is no traditional 'execute' command in Unix.
system
apachectl start
You can right-click on an appropriate object to select a command, then right-click to execute the command. You can click on an icon to execute some commands.
that is the command for system file checker.
It will depend on the software being used but is often the Command and R keys.
Command prompt/line is used to execute entered commands. Command prompt is mostly commonly used to execute batch files, perform advanced administrative functions, and troubleshoot and solve certain kinds of windows issues.
You can schedule jobs using cron and the /etc/crontab file, or you can use the "at" command
wecutil qc command