小编use*_*277的帖子

我想让我的bash脚本对最终用户更优雅.当bash执行命令时如何隐藏输出例如当bash执行时

yum install nano

以下内容将显示给执行bash的用户

Loaded plugins: fastestmirror
base                                                     | 3.7 kB     00:00
base/primary_db                                          | 4.4 MB     00:03
extras                                                   | 3.4 kB     00:00
extras/primary_db                                        |  18 kB     00:00
updates                                                  | 3.4 kB     00:00
updates/primary_db                                       | 3.8 MB     00:02
Setting up Install Process
Resolving Dependencies
--> Running transaction check
---> Package nano.x86_64 0:2.0.9-7.el6 will be installed
--> Finished Dependency Resolution

Dependencies Resolved

================================================================================
 Package         Arch              Version                Repository       Size
================================================================================
Installing:
 nano            x86_64            2.0.9-7.el6            base            436 k

Transaction Summary
================================================================================
Install       1 …

以前我在bash中使用以下命令来查找我的服务器的主ip

ipaddr=$(/sbin/ifconfig|grep inet|head -1|sed 's/\:/ /'|awk '{print $3}' | grep -v '127.0.0.1')

但是在centos7中它不再有效,因为ifconfig不可用,即使我安装ifconfig使用命令也不再有效yum install net-tools

centos 7的等效命令是什么

非常感谢

我想检查nginx中的url中是否存在参数,然后重写.我可以这样做吗？

例如,如果url http://website.com/?mobile然后将用户重定向到http://m.website.com

使用带有带宽检查插件的flowplayer时,您需要说明不同视频质量的比特率.

这是它的样子:

// the bitrates, video width and file names for this clip
      bitrates: [
        { url: "bbb-800.mp4", width: 480, bitrate: 800 },
        { url: "bbb-1200.mp4", width: 720, bitrate: 1200 },
        { url: "bbb-1600.mp4", width: 1080, bitrate: 1600 }
      ],

特定质量的哪个比特率代表youtube？

例如,使用360p质量的YouTube播放视频的比特率是多少？

即使我添加了SSLlabs,SSLlabs仍会显示以下消息 ssl_session_cache

Session resumption (caching)    No (IDs assigned but not accepted)

这是我的完整配置

server {
    listen       443 spdy; #Change to 443 when SSL is on
    ssl on; 
    ssl_certificate    /etc/ssl/domain.com_bundle.crt; 
    ssl_certificate_key  /etc/ssl/domain.com.key.nopass;
    ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
    ssl_prefer_server_ciphers on;
    #ssl_ciphers ECDH+AESGCM:DH+AESGCM:ECDH+AES256:DH+AES256:ECDH+AES128:DH+AES:ECDH+3DES:DH+3DES:RSA+AESGCM:RSA+AES:RSA+3DES:!aNULL:!MD5:!DSS;
    ssl_ciphers ECDH+AESGCM:ECDH+AES256:ECDH+AES128:DH+3DES:!ADH:!AECDH:!MD5;
    ssl_session_cache shared:SSL:10m;
    ssl_session_timeout 10m;
    ssl_buffer_size 8k;
    ssl_stapling on;
    ssl_stapling_verify on;
    ssl_trusted_certificate /etc/ssl/trustchain.crt;
    resolver 8.8.8.8 8.8.4.4;
    add_header Strict-Transport-Security "max-age=31536000; includeSubdomains;";

    #rest config goes here
    }

我想用python尽可能快地下载文件.这是我的代码

import pandas as pd
import requests
from requests_futures.sessions import FuturesSession
import os
import pathlib
from timeit import default_timer as timer


class AsyncDownloader:
    """Download files asynchronously"""

    __urls = set()
    __dest_path = None
    __user_agent = 'Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:58.0) Gecko/20100101 Firefox/58.0'
    __read_timeout = 60
    __connection_timeout = 30
    __download_count = 0  # unlimited
    # http://www.browserscope.org/?category=network
    __worker_count = 17  # No of threads to spawn
    __chunk_size = 1024
    __download_time = -1
    __errors = []

    # TODO Fetch only content of …

我如何告诉Zend Opcache 不要缓存特定目录中的任何文件.例如/var/www/public_html/devzone/*

我用PHP 5.5.13用Zend OPcache v7.0.4-dev

我希望能够在我的表中存储IPv4和IPv6地址.无论是IPv4还是IPv6地址,存储用户IP地址的最有效方法是什么？

这将在生产环境中使用,因此未来的证据建议是首选.

这是一个非常恼人的问题,我正在与 rndc reload

我收到以下错误:

rndc: connect failed: 127.0.0.1#953: connection refused

但以下工作正常,

[root@cbgfx ~]# service named restart
Stopping named: .                                          [  OK  ]
Starting named:                                            [  OK  ]

[root@cbgfx ~]# tail -f /var/log/messages
Aug  7 12:51:09 cbgfx named[31990]: zone 120.88.167.in-addr.arpa/IN: loaded serial 14
Aug  7 12:51:09 cbgfx named[31990]: zone 1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.ip6.arpa/IN: loaded serial 0
Aug  7 12:51:09 cbgfx named[31990]: zone domain.com/IN: domain.com/MX 'mail.servergreek.com' has no address records (A or AAAA)
Aug  7 12:51:09 cbgfx named[31990]: zone domain.com/IN: loaded serial 14
Aug  7 …

我通常set colorsequence podo在 gnuplot 5 中选择对色盲个体友好的颜色。但是我的绘图由12不同的键组成，因此线条颜色会重复。如何将颜色空间从默认的 8 种颜色扩展到 12 种颜色，同时仍然照顾色盲，尽量不用手动指定颜色。