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As an example application of union mounting, consider the need to update the information contained on a CD-ROM or DVD. While a CD-ROM is not writable, one can overlay the CD's mount point with a writable directory in a union mount. Then, updating files in the union directory will cause them to end up in the writable directory, giving the ...
Name Description arch: Prints machine hardware name (same as uname -m) basename: Removes the path prefix from a given pathname chroot: Changes the root directory date: Prints or sets the system date and time dirname: Strips non-directory suffix from file name du: Shows disk usage on file systems echo: Displays a specified line of text env
The mount command instructs the operating system that a file system is ready to use, and associates it with a particular point in the overall file system hierarchy (its mount point) and sets options relating to its access. Mounting makes file systems, files, directories, devices and special files available for use and available to the user.
A mount point is a location in the partition used as a root filesystem. Many different types of storage exist, including magnetic, magneto-optical, optical, and semiconductor (solid-state) drives. Many different types of storage exist, including magnetic, magneto-optical, optical, and semiconductor (solid-state) drives.
These are typically used on systems that support more than one executable code format, such as systems supporting 32-bit and 64-bit versions of an instruction set. Such directories are optional, but if they exist, they have some requirements. /media: Mount points for removable media such as CD-ROMs (appeared in FHS-2.3 in 2004). /mnt
mknod — Create a special file NAME with a given type. mkpasswd — Crypt PASSWORD using crypt(3). mkswap — Set up a Linux swap area on a device or file. mktemp — Safely create a new file "DIR/TEMPLATE" and print its name. modinfo — Display module fields for modules specified by name or .ko path. mount — Mount new filesystems on ...
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On FreeBSD, porters who need a UID for their package can pick a free one from the range 50 to 999 and then register the static allocation. [6] [7] Some POSIX systems allocate UIDs for new users starting from 500 (macOS, Red Hat Enterprise Linux till version 6), others start at 1000 (Red Hat Enterprise Linux since version 7, [8] openSUSE, Debian ...