Shulou(Shulou.com)06/01 Report--

Editor to share with you what are the important subdirectories of the Linux system. I hope you will get something after reading this article. Let's discuss it together.

/ etc/fstab

The machine automatically mounts the partition / disk, which partition / device is specified and where to mount it

[root@oldboy ~] # cat / etc/fstab## / etc/fstab# Created by anaconda on Sun Aug 12 17:26:53 2018 December # Accessible filesystems, by reference, are maintained under'/ dev/disk'# See man pages fstab (5), findfs (8) Mount (8) and/or blkid (8) for more info#UUID=c9b74b1a-41cd-4260-9444-6245ab833dd9 / ext4 defaults 1 1UUID=8880df83-5bf8-40db-bf6f-bf878b7a7e2e / boot ext4 defaults 1 2UUID=3144b92b-c079-4239-9a91-84111d2f1ac1 swap swap defaults 0 0tmpfs / / device to be mounted / dev/shm / / mount point tmpfs// file system type defaults// is mounted on option 0max / whether to back up 0max / Yes Whether to do post check devpts / dev/pts devpts gid=5 Mode=620 0 0sysfs / sys sysfs defaults 0 0proc / proc proc defaults 0 0

/ etc/resolv.conf

DNS temporary profile

[root@oldboy] # cat / etc/resolv.conf; generated by / sbin/dhclient-scriptsearch localdomainnameserver 192.168.182.2 [root@oldboy] # vi / etc/resolv.conf Generated by / sbin/dhclient-scriptsearch localdomainnameserver 192.168.182.2nameserver 8.8.8.8 ~ "/ etc/resolv.conf" 4L 100C written [root@oldboy ~] # cat / etc/resolv.conf Generated by / sbin/dhclient-scriptsearch localdomainnameserver 192.168.182.2nameserver 8.8.8.8

/ etc/hosts

Hostname resolution file:

The corresponding relationship between ip address and domain name is stored in hosts file.

Function:

Used by developers, products, testers, etc., to test products through official domain names

Domain name (internal DNS) can be used for calls between servers to facilitate migration.

[root@oldboy ~] # cat / etc/hosts127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4::1 localhost localhost.localdomain localhost6 localhost6.localdomain6

/ etc/sysconfig/nework

[root@study ~] # cat / etc/sysconfig/networkNETWORKING=yesHOSTNAME=study / / hostname

Modify hostname

Vim / etc/sysconfig/network

Sed-I-etc/sysconfig/network

/ etc/rc.local

Files stored by boot self-boot program commands (chkconfig is commonly used to manage the self-startup of program services installed by yum/rmp)

/ etc/inittab

Run-level profile

/ etc/issue

Login prompt configuration file

[root@study ~] # cat / etc/issueCentOS release 6.7 (Final) Kernel\ r on an\ m

/ var/log/messages

System information log file

PS: take a look at the Linux subdirectory

Lost+found stores repaired or damaged files

Misc Miscellaneous equipment

Net command line command

Proc images of all running processes

Temporary files that disappear every time tmp reboots

Var extracts the files or temporarily generated files and directories that need to be changed during the operation of the usr directory, so that the usr directory can be mounted read-only.

Boot

Kernel and files needed to load the kernel

Media

It mainly interacts with SessionManager to play and pause multimedia.

Mnt

Attach the directory of the optical drive and USB device. After loading, the directory of the corresponding device will be added in the mnt.

Opt: optional application installation package

Implementation of mandatory access to Directory by selinux

Sys system replication

After reading this article, I believe you have a certain understanding of "what are the important subdirectories of the Linux system". If you want to know more about it, you are welcome to follow the industry information channel. Thank you for reading!

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.