linux查看已经连接的wifi密码_linux查看已经链接的wifi密码

系统环境

Ubuntu 18.04.3 LTS, 64bit

问题解决

已经连接的wifi信息保存在/etc/NetworkManager/system-connections/下
这个目录下的几个文件就是已经连接过的wifi名字(SSID).
打开其中一项, 键wifi-security.psk对应的值就是密码.

gerrylon@Inspiron-7472:~
$ cd /etc/NetworkManager/system-connections/
gerrylon@Inspiron-7472:/etc/NetworkManager/system-connections
$ ls
 gl-wifi  'HONOR 20i'
gerrylon@Inspiron-7472:/etc/NetworkManager/system-connections
$ sudo cat 'HONOR 20i' 
[connection]
id=HONOR 20i
uuid=5a0f5630-5a41-436d-8b38-dc629c251a1c
type=wifi
permissions=

[wifi]
mac-address=FC:01:7C:0D:49:FD
mac-address-blacklist=
mode=infrastructure
ssid=HONOR 20i

[wifi-security]
auth-alg=open
key-mgmt=wpa-psk
psk=12346789

[ipv4]
dns-search=
method=auto

[ipv6]
addr-gen-mode=stable-privacy
dns-search=
method=auto
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