Shulou(Shulou.com)06/02 Report--

I. Linux directory structure

It all starts with the root, the lunix directory is not the same as Windos. It has no partition and no disk letter.

II. Important catalogue uses of Linux

1 / Root directory important directory use

1.1GroupBin-normal user command file directory

1.2:/sbin-Super user directory file directory

1.3Rank _ etc-saves the profile information directory

1.4Rank lib-32-bit database

1.5:/lib64-64-bit library file

1.6 Plus Root-superuser home directory

1.7 home-home directory for ordinary users

1.8VAR-keep frequently changing data directories

1.9Virgo boot-system boot file directory

1.10 Pluto devo-system device configuration directory

1.11Rank mntRod-system temporary mount directory

1.12Granger tmp-system temporary file directory

1.13Groupusr-the root directory of the system (root backup)

1.14GRAPH opt-saves third-party program data

1.15 Pluto procc-system process and kernel information directory

2./etc directory important directory use

2.1:/etc/sysconfig/network-scripts/ifcfg-eth0

Network card profile

2.2:/etc/reslov.conf

Linux system DNS client profile

2.3.1:CentOS6 version / ect/hostname

2.3.2:CentOS7 version / ect/sysconfig/network

Hostname profile

2.4:/etc/hosts

DNS parsing file local to the system

2.5:/etc/fstab

Configure files to be automatically mounted by boot devices

2.6:/etc/rc.local

A file that stores the commands of the boot self-startup program

2.7:/etc/inittab

Configuration files such as system startup, run level, etc.

2.8:/etc/profile / etc/bashrc

Files that configure the environment variables / aliases of the system

2.9:/etc/profile.d

The directory where the script executed after the user logs in

2.10:/etc/issue / etc/issue.net

Configure a file that displays information before the user logs in to the terminal

2.11:/etc/init.d

The directory where the software startup program is located

2.12:/etc/motd

Configure a file that displays prompts after the user logs in to the system

2.13:/etc/redhat-release

A file that declares redhat version number and name information

2.14:/etc/sysctl.conf

Linux kernel parameter settings file

3./usr directory important directory use

3.1:/usr/local

The default location path for compiling and installing software

3.2:/usr/src

The directory where the source files are stored

Important directory uses of the 4./var directory

4.1:/var.log

Record the directory where the system and software operation information files are located

4.2:/var/log/messages

System-level log file

4.3:/var/log/secure

User login information log file

4.4:/var.log/dmesg

A log file that records hardware information loading

Important directory uses under the 5./proc directory

5.1:/proc/meminfo

System memory information

5.2:/proc/cpuinfo

Information about the system processor

5.3:/proc/lodavg

System load information, the result of uptime

5.4:/proc/mounts

List of loaded file systems

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