Enable directory listing on Nginx Web Server

1:Test environment

[root@linux-node1 ~]# cat /etc/redhat-release 
CentOS Linux release 7.5.1804 (Core) 
[root@linux-node1 ~]# uname -r
3.10.0-862.el7.x86_64
[root@linux-node1 ~]# cat /etc/os-release 
NAME="CentOS Linux"
VERSION="7 (Core)"
ID="centos"
ID_LIKE="rhel fedora"

[root@linux-node1 ~]# hostname -I
192.168.99.24

2: Nginx Installation

[root@linux-node1 ~]# yum -y install nginx
[root@linux-node1 ~]# systemctl start nginx.service 
[root@linux-node1 ~]# systemctl enable nginx.service

3:Configuration

[root@linux-node1 ~]# cp /etc/nginx/nginx.conf{,.bck}
[root@linux-node1 ~]# egrep -v "#|^$" /etc/nginx/nginx.conf.bck > /etc/nginx/nginx.conf

[root@linux-node1 ~]# cat -n /etc/nginx/nginx.conf
    28	        location / {
    29				autoindex on;    
    30				autoindex_exact_size off;   
    31				autoindex_localtime on;
    32	        }

[root@linux-node1 ~]# cd /usr/share/nginx/html/
[root@linux-node1 html]# ls
404.html  50x.html  index.html  nginx-logo.png  poweredby.png
[root@linux-node1 html]# rm -rf *
[root@linux-node1 html]# ls
Anti-Fire Trainning  CCTV News Daily  Documents

4: http://192.168.99.24

autoindex on;
autoindex_exact_size off;
默认为on，显示出文件的确切大小，单位是bytes。
改为off后，显示出文件的大概大小，单位是kB或者MB或者GB
autoindex_localtime on;
默认为off，显示的文件时间为GMT时间。
改为on后，显示的文件时间为文件的服务器时间

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[root@linux-node1 ~]# htpasswd --help
Usage:
	htpasswd [-cimBdpsDv] [-C cost] passwordfile username
	htpasswd -b[cmBdpsDv] [-C cost] passwordfile username password

	htpasswd -n[imBdps] [-C cost] username
	htpasswd -nb[mBdps] [-C cost] username password
 -c  Create a new file.
 -n  Don't update file; display results on stdout.
 -b  Use the password from the command line rather than prompting for it.
 -i  Read password from stdin without verification (for script usage).
 -m  Force MD5 encryption of the password (default).
 -B  Force bcrypt encryption of the password (very secure).
 -C  Set the computing time used for the bcrypt algorithm
     (higher is more secure but slower, default: 5, valid: 4 to 31).
 -d  Force CRYPT encryption of the password (8 chars max, insecure).
 -s  Force SHA encryption of the password (insecure).
 -p  Do not encrypt the password (plaintext, insecure).
 -D  Delete the specified user.
 -v  Verify password for the specified user.
On other systems than Windows and NetWare the '-p' flag will probably not work.
The SHA algorithm does not use a salt and is less secure than the MD5 algorithm.

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