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Repeat command automatically in Linux
...ble when we go with while.
As a command:
while true ; do command ; sleep 100 ; done &
[ ex: # while true; do echo `date` ; sleep 2 ; done & ]
Example:
while true
do echo "Hello World"
sleep 100
done &
Do not forget the last & as it will put your loop in the background. But y...
Using Python's os.path, how do I go up one directory?
I recently upgrade Django from v1.3.1 to v1.4.
14 Answers
14
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How do I use floating-point division in bash?
...
you can do this:
bc <<< 'scale=2; 100/3'
33.33
UPDATE 20130926 : you can use:
bc -l <<< '100/3' # saves a few hits
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improve this answer
...
Javascript Array.sort implementation?
...edian of first, last and middle element.
var v0 = a[from];
var v1 = a[to - 1];
var v2 = a[third_index];
var c01 = comparefn(v0, v1);
if (c01 > 0) {
// v1 < v0, so swap them.
var tmp = v0;
v0 = v1;
v1 = tmp;
} // v0 <= v1.
...
马云、王健林为什么都看中了上海? - 资讯 - 清泛网 - 专注C/C++及内核技术
...署战略合作协议,2015年起签订三年战略合作协议,搭建新人扶持、服务、创新的平台。
今年4月17日,上海通用汽车和阿里巴巴集团阿里汽车事业部签署战略合作协议,在汽车大数据营销、汽车金融、原厂售后O2O业务和二...
布局列表框使用指导 · App Inventor 2 中文网
...选结果) {
正在加载 = true
var 下一批 = []
var 结束位置 = min(已加载 + 5, length(筛选结果))
for 行号 = 已加载 + 1 to 结束位置 {
listAdd(下一批, 制作行(筛选结果[行号]))
}
已加载 = 结束位置
布局列表框_列表.AppendD...
DynamicRecycler 拓展:高效动态列表 · App Inventor 2 中文网
...项] msg 索引 2
滚动控制
// 滚动到指定位置(作用于最后创建的组件)
DynamicRecycler1.ScrollToPosition(5)
// 平滑滚动(带动画)
DynamicRecycler1.SmoothScrollTo(1)
// 使用滚动监听
DynamicRecycler1.SetScrollStateListener(DynamicRecycler1....
任意组件块 · App Inventor 2 中文网
...面是一个方法块,用于计算从标记到用户在地图上的当前位置的距离。
图 3. 使用方法块的示例,该方法块采用任何标记并计算从用户当前位置到该标记的距离。
事件
任意组件事件是任意组件块的最复杂形...
How to restore to a different database in sql server?
...TO DISK = @TemplateBackups WITH CHECKSUM, COPY_ONLY, FORMAT, INIT, STATS = 100;
-- Get the backup file list as a table variable
DECLARE @BackupFiles TABLE(LogicalName nvarchar(128),PhysicalName nvarchar(260),Type char(1),FileGroupName nvarchar(128),Size numeric(20,0),MaxSize numeric(20,0),FileId ti...
How can I get a user's media from Instagram without authenticating as a user?
...in Instagram's documentation.
To perform GET on https://api.instagram.com/v1/users/<user-id>/media/recent/ (at present time of writing) you actually do not need OAuth access token.
You can perform https://api.instagram.com/v1/users/[USER ID]/media/recent/?client_id=[CLIENT ID]
[CLIENT ID] w...
