Linux does not have C drive, because Linux uses directory form to replace the concept of hard disk partition in Windows, so there is no concept of drive letters such as C drive and D drive in Linux. In Linux, all drive letters are Data from different partitions together form a unique directory tree.
#The operating environment of this tutorial: linux5.9.8 system, Dell G3 computer.
Doesn’t Linux have a c drive?
There is no concept of hard disk partitions such as C and D drives under Linux.
A very important difference between Linux and Windows is the file system. Linux supports more file system types than Windows; the organization of Linux file systems is also different from Windows. Linux does not have the concept of drive letters such as C drive and D drive. All data in different partitions together form a unique directory tree; in In Linux, it is easy to decide whether to mount a partition as needed.
Under Linux, the directory form is used to replace the concept of hard disk partition in Windows.
linux file structure
/: Root directory, all directories, files, and devices are under /. / is the organizer of the Linux file system and the highest-level leader.
/bin: bin is the English abbreviation of binary. In general systems, commonly used Linux commands can be found in this directory. The commands required by the system are located in this directory.
/boot: The file directory required for the Linux kernel and boot system programs, such as the vmlinuz initrd.img file, is located in this directory. Under normal circumstances, the GRUB or LILO system boot manager is also located in this directory.
/cdrom: This directory is empty when the system is just installed. The CD-ROM file system can be mounted in this directory. For example: mount /dev/cdrom /cdrom
/dev: dev is the English abbreviation of device. This directory is very important to all users. Because this directory contains all external devices used in the Linux system. But the driver for the external device is not placed here. This is different from the commonly used Windows and DOS operating systems. It is actually a port to access these external devices. It is very convenient to access these external devices, and there is no difference from accessing a file or a directory.
/etc: The etc directory is one of the most important directories in the Linux system. Various configuration files and subdirectories used in system management are stored in this directory. The network configuration files, file systems, x system configuration files, device configuration information, user settings, etc. to be used are all in this directory.
/home: If you create a user and the user name is "xx", then there will be a corresponding /home/xx path in the /home directory to store the user's home directory.
/lib: lib is the English abbreviation of library. This directory is used to store the system's dynamically linked shared libraries. Almost all applications use shared libraries in this directory. Therefore, do not perform any operations on this directory easily. Once a problem occurs, the system will not work.
/lost found: In the ext2 or ext3 file system, when the system crashes unexpectedly or the machine shuts down unexpectedly, some file fragments are generated and placed here. The fsck tool will check this during system startup and repair damaged file systems. Sometimes there is a problem with the system, and many files are moved to this directory. It may be repaired manually, or the files may be moved to their original locations.
/mnt: This directory is generally used to store the mounting directory for mounting storage devices, such as cdrom and other directories. See the definition of /etc/fstab.
/media: Some Linux distributions use this directory to mount USB interface mobile hard disks (including U disks), CD/DVD drives, etc.
/opt: This is where optional programs are mainly stored.
/proc: System information can be obtained in this directory. This information is in memory and generated by the system itself.
/root: The home directory of Linux super privilege user root.
/sbin: This directory is used to store the system management program of the system administrator. Most of them are storage of commands related to system management. They are the storage place for executable commands of the super-privileged user root. Ordinary users do not have permission to execute commands in this directory. This directory is the same as /usr/sbin; /usr/X11R6/sbin or /usr. The /local/sbin directory is similar. Everything contained in the sbin directory can only be executed with root permissions.
/selinux: For some configuration file directories of SElinux, SElinux can make Linux more secure.
/srv After the service is started, the data directory that needs to be accessed. For example, the web page data read by the www service when it is started can be placed in /srv/www
/tmp : Temporary file directory, used to store temporary files generated when different programs are executed. Sometimes when users run programs, temporary files are generated. /tmp is used to store temporary files. The /var/tmp directory is similar to this directory.
/usr
This is the directory that takes up the largest amount of hard disk space in the Linux system. Many of the user's applications and files are stored in this directory. In this directory, you can find additional tools that do not fit in the /bin or /etc directories
/usr/local: This mainly stores software that is installed manually, that is, software that is not installed through "Synaptic" or apt-get. It has a similar directory structure to the /usr directory. Let the package manager manage the /usr directory, and place custom scripts under the /usr/local directory.
/usr/share: The storage location for things shared by the system. For example, /usr/share/fonts is the font directory, /usr/share/doc and /usr/share/man help files.
/var: The contents of this directory change frequently. You can tell by looking at the name. It can be understood as the abbreviation of vary. Under /var there is /var/log. This is the directory used to store system logs. The /var/ www directory defines the directory where the Apache server site is stored; /var/lib is used to store some library files, such as MySQL, and the storage location of the MySQL database.
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