14 articles tagged "root user"
- How do I forcefully unmount a Linux disk partition?
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 happens basically, [...] - FreeBSD: How to write protect important file ( even root can NOT modify / delete file )
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 be a [...] - FreeBSD Load Device Driver / Kernel Module
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 [...]
- Linux Password trick with immutable bit using chattr command
With the help of utility called chattr, you can changes the file attributes on a Linux second extended file system. The operator + causes the selected attributes to be added to the existing attributes of the files; - causes them to be removed; and = causes them to be the only attributes that the files [...]
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