root user

Yet another newbie question that suggests people love to kill and show their power to rest of the world ;)

There is a package called procps. It includes various useful (nifty) utilities. One of such utility is skill which is responsible to send a signal to users and process such as:

  • Halt user terminal
  • Kill user and logout

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From my mail bag:

I would like to run few commands such as stop or start web server as a root user. How do I allow a normal user to run these commands as root?

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xorgconfig is an interactive command for generating an xorg.conf file for use with Xorg X servers.

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It happens many times you try to unmount a disk partition or mounted CD/DVD disk and if you try to unmount device, which is accessed by other users, then you will get error umount: /xxx: device is busy. However, Linux/FreeBSD comes with fuser command to kill forcefully mounted partition. Understanding device error busy error What […]

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The chflags utility modifies the file flags of the listed files as specified by the flags operand. FreeBSD offers write protection, you need to to set special bit call immutable. Once this bit is setup no one can delete or modify file including root. And only root can clear the File immutable bit. You must […]

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The superuser is a privileged user with unrestricted access to all files and commands. The superuser has the special UID (user ID) 0. You need to become super user (root) only when tasks need root permissions. Here is how to become a super user:

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Under FreeBSD operating system you need to use the kldload utility to load file.ko into the kernel using the kernel linker. You can find all loadable kernel drivers in in /boot/kernel or /boot/modules/ directory. Some modules (pf, ipfw, ipf, etc.) may be automatically loaded at boot time when the corresponding /etc/rc.conf statement is used. Modules […]

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