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How to create user for a db in postgresql? [closed]
I have installed PostgreSQL 8.4 on my CentOS server and connected to root user from shell and accessing the PostgreSQL shell.
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Set HTTP header for one request
I have one particular request in my app that requires Basic authentication, so I need to set the Authorization header for that request. I read about setting HTTP request headers , but from what I can tell, it will set that header for all requests of that method. I have something like this in my cod...
ffmpeg - Converting MOV files to MP4 [closed]
...mp4
Alternative as mentioned in the comments, which re-encodes with best quaility (-qscale 0):
ffmpeg -i input.mov -q:v 0 output.mp4
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How to find out “The most popular repositories” on Github? [closed]
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you gotta put a floor into the most starred queries. like searching for projects with more than 100k stars: github.com/search?q=stars%3A%3E100000&type=Repositories
– jorelli
Apr 22 '19 at 22:57
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How to merge images in command line? [closed]
I would like to try the CSS Sprite technique to load a few thumbnails as a single image. So I need to "merge" a few thumbnails in a single file offline in the server.
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Postfix日常维护队列管理 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...递队列中所有邮件(慎用)
postfix flush
#查看队列邮件
postqueue -p
mailq
postqueue -p |tail
使用postsuper 来维护队列：
一般是先用mailq查看队列里的邮件，找到对应的id，然后用postsuper -d来删除。
例如id是0EAF3A9B 那么postsuper -d 0EAF3A9B
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如何诊断CDN故障 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...过应该包含了大部分的节点，有兴趣的可以参考百度的JQuery CDN例子。
需要说明的是阿里测偏重于测试国内的网络环境，如果你要测试的CDN偏重于国外的网络环境，可以考虑使用Just-Ping提供的服务。
补充：类似的还有17CE提供的...
Subversion钩子 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...$SVNLOOK cat -t "$TXN" "$REPOS" "$FILE")
if echo "$CONTENT" | grep -q $'\xEF\xBB\xBF'; then
echo "Please remove BOM from $FILE" 1>&2
exit 1
fi
if [[ "$FILE" =~ \.(php|html)$ ]]; then
MESSAGE=$(echo "$CONTENT" | $PHP -l 2>&1)
if [ $? -ne 0 ]; t...
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...值约合人民币￥1元，相信优惠力度人人都会计算。
FQA：
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发帖、回帖（自由开放，注意文明发言）获得积分。
优质原创技术博文请不吝向我们投...
AI2 如何快捷比较两个列表的差异项，然后再根据差异的项去执行更新操作？ -...
...典的特点：
https://www.fun123.cn/reference/blocks/dictionaries.html
Q：App Inventor 2 什么情况下需要使用字典？A：列表能完成字典的绝大部分功能，不过字典具有比列表更好的查找性能，因此如果要对数据结构执行大量的操作，建议优先使...