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Is there a command like “watch” or “inotifywait” on the Mac?
I want to watch a folder on my Mac (Snow Leopard) and then execute a script (giving it the filename of what was just moved into a folder (as a parameter... x.sh "filename")).
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How to insert a newline in front of a pattern?
... I'm not sure this works in all versions of sed. I tried this on my Mac and the \n just gets output as 'n'
– Todd Gamblin
Apr 6 '09 at 21:13
4
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MLKitTextRecognizer 拓展：离线图片文字识别（OCR，中英文） · App Inventor 2 中文网
...。path 可以是素材文件名、设备路径、file:// 或 content:// 地址
（「图像选择器」的 选中项 可以直接传进来）。
RecognizeFromBase64(base64)
识别 Base64 图片中的文字。支持纯 Base64，也支持带 data:image/...;base64, 前缀的写法。
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psql: could not connect to server: No such file or directory (Mac OS X)
Upon restarting my Mac I got the dreaded Postgres error:
21 Answers
21
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App Inventor 2 网络摄像头调用教程 - 通过API查看实时监控画面 · App Inventor 2 中文网
...-3秒）
Q2: 无法连接摄像头？
确认IP地址正确
确认手机和摄像头在同一网络
检查防火墙设置
尝试在浏览器中直接访问URL
Q3: RTSP流怎么播放？
App Inventor不支持RTSP协议。解决方案：
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Adding git branch on the Bash command prompt
...-prompt.sh).
Option 1: use an existing copy on your filesystem. Example (Mac OS X 10.15):
$ find / -name 'git-prompt.sh' -type f -print -quit 2>/dev/null
/Library/Developer/CommandLineTools/usr/share/git-core/git-prompt.sh
Option 2: Pull the script from GitHub.
Next, add the following line ...
How can I start PostgreSQL server on Mac OS X?
...rt)
Cleaning up
PostgreSQL was most likely installed via Homebrew, Fink, MacPorts or the EnterpriseDB installer.
Check the output of the following commands to determine which package manager it was installed with:
brew && brew list|grep postgres
fink && fink list|grep postgres
port...
Arduino 101 实验02 - 手机开关灯与亮度调节 · App Inventor 2 中文网
...编自 MIT 官方教程 App Inventor + IoT: LED。原文里的扩展下载地址已失效，
本文一律用本站的本地扩展文件。
不想一步步搭？ 直接下载做好的工程导入即可：
Arduino101LED.aia（组件命名与本文一致）
一、器材清单
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正则表达式 30 分钟入门教程 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...些操作(后面会有介绍)。
(\d{1,3}\.){3}\d{1,3}是一个简单的IP地址匹配表达式。要理解这个表达式，请按下列顺序分析它：\d{1,3}匹配1到3位的数字，(\d{1,3}\.){3}匹配三位数字加上一个英文句号(这个整体也就是这个分组)重复3次，最后...
Mac OSX Lion DNS lookup order [closed]
After upgrading to Mac OSX Lion I figured out that /etc/hosts is not looked up in first place for name resolution anymore. This leads to some side effects like:
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