Linux root directory parsing

The root directory structure is as follows:

　　　　　　　　　　　　　　　　

1./-Root directory:

Each of the files and directories starts here.

Only the root user has write permissions to the directory. This directory differs from the/root directory in that the/root directory is the root user's home directory.

2./bin-User binary files:

Contains a binary executable file.

The commands used by all users of the system are located here, for example: PS,LS,PING,GREP,CP.

3./sbin-System binaries:

Just like/bin,/sbin also contains binary executables.

However, Linux commands in this directory are usually used by system administrators to maintain the system. For example: Iptables, reboot, Fdisk, ifconfig, swapon commands.

4./etc-Configuration file:

Contains the configuration files that are required for all programs.

It also contains startup and shutdown shell scripts for starting/stopping a single program. For example:/etc/resolv.conf,/etc/logrotate.conf

5./dev-Device files:

Contains device files.

These include terminal equipment, USB or any device connected to the system. For example:/dev/tty1,/dev/usbmon0

6./proc-Process Information

Contains information about the system process.

This is a virtual file system that contains information about the processes that are running. For example: The/proc/{pid} directory contains information related to a specific PID.

This is a virtual file system in which system resources exist as textual information. Example:/proc/uptime

7./var-variable file

var represents a variable file.

This directory allows you to find files that may grow in content.

This includes-system log files (/var/log), Package and database files (/var/lib), e-mail (/var/mail), print queue (/var/spool), lock Files (/var/lock), multiple restarts of required temporary files (/var/tmp) ;

8./tmp-Temp file

Contains system and user-created temporary files.

When the system restarts, the files in this directory will be deleted.

9./usr-user program

Source code that contains binaries, library files, documents, and level two programs.

The/usr/bin contains a binary file of the user program. If you can't find the user binaries in/bin, go to the/usr/bin directory to see. For example: At, awk, CC, less, SCP.

The/usr/sbin contains the system administrator's binaries. If you can't find the system binaries in/sbin, go to the/usr/sbin directory to see it. For example: ATD, Cron, sshd, Useradd, Userdel.

The/usr/lib contains the libraries used by/usr/bin and/usr/sbin.

The user program installed from the source is included in the/usr/local. For example, when you install Apache from the source, it will be in/usr/local/apache2.

/home-home Directory

All users use the home directory to store their personal files.

For example:/home/john,/home/nikita

One./boot-boot loader files

Contains the boot loader-related files.

The kernel's initrd, vmlinux, and grub files are located under/boot.

For example: Initrd.img-2.6.32-24-generic, Vmlinuz-2.6.32-24-generic

/lib-System Library

Contains library files that support binary files located under/bin and/sbin.

The library file is named ld* or lib*.so.*

Example: ld-2.11.1.so,libncurses.so.5.7

/OPT-Optional add-on application

opt represents opitional;

Contains additional applications from individual vendors.

Additional applications should be installed in subdirectories of/opt/or/opt/.

/MNT-Mount Directory

A temporary installation directory where the system administrator can mount the file system.

/media-Removable media devices

A temporary directory that is used to mount removable devices.

For example, mount the CD-ROM/media/cdrom, mount the floppy disk drive/media/floppy;

/SRV-Service data

The SRV Representative service.

Contains data related to server-specific services.

For example,/srv/cvs contains CVS-related data.

Linux root directory parsing