我有以下
$var = "2010-01-21 00:00:00.0"
我想把这个日期与今天的日期进行比较(即我想知道这$var是在今天之前还是今天等于或等)
我需要使用什么功能？
我正试图在Ubuntu 14.04上跟随如何使用uWSGI和Nginx服务Django应用程序而我在早期阶段失败,由于输出量的原因,我将所有相关信息放入Pastebin.com - #1粘贴工具自2002年!.
实际错误:
root@alexus:~# echo "source /usr/local/bin/virtualenvwrapper.sh" >> ~/.bashrc
root@alexus:~# source ~/.bashrc
/usr/bin/python3: Error while finding spec for 'virtualenvwrapper.hook_loader' (<class 'ImportError'>: No module named 'virtualenvwrapper')
virtualenvwrapper.sh: There was a problem running the initialization hooks.
If Python could not import the module virtualenvwrapper.hook_loader,
check that virtualenvwrapper has been installed for
VIRTUALENVWRAPPER_PYTHON=/usr/bin/python3 and that PATH is
set properly.
root@alexus:~#
我正在追问如何磨牙,我做错了什么？
我刚刚在Test里面创建了项目Android Studio,我收到了以下消息:
摘要:
渲染问题:此版本的渲染库比您的Android Studio版本更新.请更新Android Studio.
细节:
org.jetbrains.android.uipreview.RenderingException: This version of the rendering library is more recent than your version of Android Studio. Please update Android Studio
at org.jetbrains.android.uipreview.LayoutLibraryLoader.load(LayoutLibraryLoader.java:90)
at org.jetbrains.android.sdk.AndroidTargetData.getLayoutLibrary(AndroidTargetData.java:159)
at com.android.tools.idea.rendering.RenderService.createTask(RenderService.java:164)
at com.intellij.android.designer.designSurface.AndroidDesignerEditorPanel$6.run(AndroidDesignerEditorPanel.java:475)
at com.intellij.util.ui.update.MergingUpdateQueue.execute(MergingUpdateQueue.java:320)
at com.intellij.util.ui.update.MergingUpdateQueue.execute(MergingUpdateQueue.java:310)
at com.intellij.util.ui.update.MergingUpdateQueue$2.run(MergingUpdateQueue.java:254)
at com.intellij.util.ui.update.MergingUpdateQueue.flush(MergingUpdateQueue.java:269)
at com.intellij.util.ui.update.MergingUpdateQueue.flush(MergingUpdateQueue.java:227)
at com.intellij.util.ui.update.MergingUpdateQueue.run(MergingUpdateQueue.java:217)
at com.intellij.util.concurrency.QueueProcessor.runSafely(QueueProcessor.java:238)
at com.intellij.util.Alarm$Request$1.run(Alarm.java:351)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
然而我的Android Studio IS是最新的,当我通过Help- > 检查它时Check for Update,我得到了Your already …
我正在尝试安装 Minikube，即使在安装过程中没有错误，我仍然无法运行它：
$ brew install minikube
Updating Homebrew...
==> Downloading https://homebrew.bintray.com/bottles/minikube-1.5.2.catalina.bottle.tar.gz
Already downloaded: /Users/alexus/Library/Caches/Homebrew/downloads/a466d3b5c7208788bb6a82fa4de4576440dbfa3b7b5b1d4ddb48cb9a3d44f1e9--minikube-1.5.2.catalina.bottle.tar.gz
==> Pouring minikube-1.5.2.catalina.bottle.tar.gz
==> minikube cask is installed, skipping link.
==> Caveats
Bash completion has been installed to:
/usr/local/etc/bash_completion.d
zsh completions have been installed to:
/usr/local/share/zsh/site-functions
==> Summary
/usr/local/Cellar/minikube/1.5.2: 8 files, 51.5MB
$ minikube
-bash: minikube: command not found
$
请指教。
$ sudo mv minikube /usr/local/bin
Password:
mv: rename minikube to /usr/local/bin/minikube: No such file or directory
$
minikube version：
$ /usr/local/Cellar/minikube/1.5.2/bin/minikube version …我正在使用Apple Mac OS X El Capitan,在尝试安装Android Studio 2.0时遇到以下错误:
无法创建虚拟设备:缺少AVD设置所需的系统映像
不幸的是,虽然Android Studio Setup尝试过Creating Android virtual device,它失败了,没有重试的能力(
如何在Android Studio安装向导之外完成失败的步骤？
我正在尝试使用curl，但遇到以下问题：
# curl -v --cacert ./ca.crt --key ./private/X.key --cert ./issued/X.crt https://X.X.X
* Rebuilt URL to: https://X.X.X/
* Trying X.X.X.X...
* TCP_NODELAY set
* Connected to X.X.X (X.X.X.X) port 443 (#0)
* ALPN, offering h2
* ALPN, offering http/1.1
* Cipher selection: ALL:!EXPORT:!EXPORT40:!EXPORT56:!aNULL:!LOW:!RC4:@STRENGTH
* successfully set certificate verify locations:
* CAfile: ./ca.crt
CApath: /etc/ssl/certs
* TLSv1.2 (OUT), TLS header, Certificate Status (22):
* TLSv1.2 (OUT), TLS handshake, Client hello (1):
* TLSv1.2 (IN), TLS header, Unknown (21):
* TLSv1.2 …从$ var中提取HTML的最佳方法是什么？
$ var的例子
$var = "<a href="http://stackoverflow.com/">Stack Overflow</a>"
我想要
$var2 = "http://stackoverflow.com/"
例如:preg_match();
还有什么？
我想从git更新我现有的结账,但不在该目录内:
-sh-3.2$ pwd
/var/lib/gitolite
-sh-3.2$ git clone repositories/visits.git/
Cloning into 'visits'...
done.
-sh-3.2$ cd visits/
-sh-3.2$ git remote -v
origin /var/lib/gitolite/repositories/visits.git/ (fetch)
origin /var/lib/gitolite/repositories/visits.git/ (push)
-sh-3.2$ cd
-sh-3.2$ git --git-dir=/var/lib/gitolite/repositories/visits.git/ --work-tree=/var/lib/gitolite/visits/ pull
fatal: No remote repository specified. Please, specify either a URL or a
remote name from which new revisions should be fetched.
-sh-3.2$ cd visits/
-sh-3.2$ git pull
Already up-to-date.
-sh-3.2$ git --version
git version 1.8.2.1
-sh-3.2$
我真的不明白git-dir和work-tree,有人可以解释我到底做错了什么？
当我启动Android Studio 2.0时,我收到以下消息:
平台和插件更新
我们希望您的IDE通过安全连接接收升级.不幸的是,这在Java 6上不起作用,因此该选项被禁用.升级JRE后,您可以在设置中再次启用它.
System Preferences- > Java=Java 8 Update 77bash- > java -version=java version "1.7.0_71"Android Studio 2.0- > Help- > About=Java 6我如何解决手头的问题？
我正在使用以下系统：
$ cat /etc/redhat-release
CentOS Linux release 7.2.1511 (Core)
$ uname -a
Linux X 3.10.0-327.18.2.el7.x86_64 #1 SMP Thu May 12 11:03:55 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux
$ rpm -qa | grep ^jdk
jdk1.8.0_91-1.8.0_91-fcs.x86_64
$
我从下载 Android Studio 和 SDK 工具 |下载android-studio-ide-143.2821654-linux.zip Android 开发人员解压缩它，然后在尝试运行时studio.sh，我得到以下信息：
$ /opt/android-studio/bin/studio.sh
Java HotSpot(TM) 64-Bit Server VM warning: ignoring option MaxPermSize=350m; support was removed in 8.0
log4j:WARN No appenders could be found for logger (io.netty.util.internal.logging.InternalLoggerFactory).
log4j:WARN Please initialize the log4j …