Hi All,
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below given some system admin command with descriptions.
halt
This command shuts down the operating system, but can only be run by the root user.
This command shuts down and restarts the operating system. It also can only be run by root.
This command also shuts down the operating system, and can only be run by your root user.
This command opens the manual page for the command or utility specified. The man utility is a very useful tool. If you are unsure how to use any command, use man to access its manual page. For example, you could enter man ls at the shell prompt to learn how to use the ls utility.
The info utility also displays a help page for the indicated command or utility. The information displayed with info command will be in-depth than that displayed in the man page for the same command.
This command switches the current user to a new user account. For example, if you’re logged in as vickey and need to change to user account to vinita, you can enter su vinita at the shell prompt. This command is most frequently used to switch to the superuser root account.
In fact, if you don’t supply a username, this utility assumes that you want to change to the root account. If you enter su -, then you will switch to the root user account and have all of root’s environment variables applied.
This command require password of the user you want switch.
Are you preparing for rhce certification ? now you can get materials and guidence here .
below given some system admin command with descriptions.
halt
This command shuts down the operating system, but can only be run by the root user.
#haltreboot
This command shuts down and restarts the operating system. It also can only be run by root.
#reboot [will perform simple reboot]
#reboot -f [will perform fast reboot ] init 0 This command also shuts down the operating system, and can only be run by your root user.
#init 0init 6 This command also shuts down and restarts the operating system. It also can only be run by root
#init 6man
This command opens the manual page for the command or utility specified. The man utility is a very useful tool. If you are unsure how to use any command, use man to access its manual page. For example, you could enter man ls at the shell prompt to learn how to use the ls utility.
#man lsinfo
The info utility also displays a help page for the indicated command or utility. The information displayed with info command will be in-depth than that displayed in the man page for the same command.
info lssu
This command switches the current user to a new user account. For example, if you’re logged in as vickey and need to change to user account to vinita, you can enter su vinita at the shell prompt. This command is most frequently used to switch to the superuser root account.
In fact, if you don’t supply a username, this utility assumes that you want to change to the root account. If you enter su -, then you will switch to the root user account and have all of root’s environment variables applied.
This command require password of the user you want switch.
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