我无法在我的VPS和终端打印中使用apt-get命令安装任何软件:
root@ubuntu:~# apt-get install python3
Reading package lists... Done
Building dependency tree
Reading state information... Done
Package python3 is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
我在url的dns.lookup()上遇到错误。有什么帮助吗??比方说https://stackoverflow.com/questions/41942690/removing-http-or-http-and-www/41942787
我已经删除了https://,但它仍然不起作用。
var dns = require('dns');
var url = "https://stackoverflow.com/questions/41942690/removing-http-or-http-and-www/41942787";
dns.lookup(url,(e
我想访问这个脚本中"commonName“的值:输出生成错误:
Traceback (most recent call last):
File "test.py", line 9, in <module>
print(x["subject"]["commonName"])
TypeError: tuple indices must be integers or slices, not str
我可以访问x["subject"],但这不是我想要的。我想要commonName值,但无法访问它。
x =
我一直在努力建造
FROM rocker/r-ver:3.4.4
MAINTAINER Dennis Leão
RUN apt-get -y update && \
apt-get install -y build-essential curl openssl
但我收到了以下错误
Err:1 http://security-cdn.debian.org/debian-security stretch/updates InRelease
Could not connect to security-cdn.debian.org:80 (151.101.252.204). -
我在安装OpenSSH时出错:
Err:2 http://security.ubuntu.com/ubuntu xenial-security/main i386
openssh-server i386 1:7.2p2-4ubuntu2.7 Could not resolve
'security.ubuntu.com' E: Failed to fetch
http://security.ubuntu.com/ubuntu/pool/main/o/openssh/openssh-sftp-server_7.2p2-4ubuntu2.7_i386.deb
Could not
我们在亚马逊EC2实例中使用HA代理将某些请求路由到两个不同的内部负载平衡器,即EC2 ELB(弹性负载平衡器)。
下面是HA代理配置:
defaults
mode http
log global
no option redispatch
retries 25
timeout connect 10000 # default 10 second time out if a backend is not found
我执行:sudo apt-get dist-upgrade和我得到这个:
Reading Package Lists ... Done
Building the dependency tree
Reading status information ... Done
Calculation of the update ... Some packages can not be installed. This may mean
That you have asked for the impossible, or if you
Unstable distribution, which some pac
我正在尝试创建一个连接到API的应用程序。现在我正在尝试连接到API并打印结果。但是,由于某些原因,我一直收到以下错误:
Exception in thread "main" java.net.UnknownHostException: www.data.goteborg.se
at java.net.AbstractPlainSocketImpl.connect(Unknown Source)
at java.net.PlainSocketImpl.connect(Unknown Source)
at java.net.SocksSocketImpl.
我在用Ubuntu。当我尝试从命令shell登录到Heroku时,我会得到以下错误:
/usr/local/lib/ruby/1.9.1/net/http.rb:644:in `initialize': getaddrinfo: Name or service not known (SocketError)
from /usr/local/lib/ruby/1.9.1/net/http.rb:644:in `open'
from /usr/local/lib/ruby/1.9.1/net/http.rb:644:in `block in connect'
from /