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How to check if running as root in a bash script
...script that requires root level permissions, and I want to make it so that if the script is not run as root, it simply echoes "Please run as root." and exits.
...
How to prevent ifelse() from turning Date objects into numeric objects
I am using the function ifelse() to manipulate a date vector. I expected the result to be of class Date , and was surprised to get a numeric vector instead. Here is an example:
...
Meaning of $? (dollar question mark) in shell scripts
...n for failure.
Hence when scripting; I tend to use the following syntax
if [ $? -eq 0 ]; then
# do something
else
# do something else
fi
The comparison is to be done on equals to 0 or not equals 0.
** Update Based on the comment: Ideally, you should not use the above code block for compariso...
I need a Nodejs scheduler that allows for tasks at different intervals [closed]
...
'* * * * * *' - runs every second
'*/5 * * * * *' - runs every 5 seconds
'10,20,30 * * * * *' - run at 10th, 20th and 30th second of every minute
'0 * * * * *' - runs every minute
'0 0 * * * *' - runs every hour (at 0 minutes and 0 seconds)
But also more complex schedules e.g.
'00 30 11 * * 1-5'...
How to change the ROOT application?
... |
edited Mar 26 '13 at 10:21
answered May 23 '11 at 6:37
...
Javascript - sort array based on another array
...{
var found = false;
items = items.filter(function(item) {
if(!found && item[1] == key) {
result.push(item);
found = true;
return false;
} else
return true;
})
})
result.forEach(function(item) {
document.writel...
Check if two lists are equal [duplicate]
...d checks for reference equality.
var a = ints1.SequenceEqual(ints2);
Or if you don't care about elements order use Enumerable.All method:
var a = ints1.All(ints2.Contains);
The second version also requires another check for Count because it would return true even if ints2 contains more element...
深入解析ATL - 文档下载 - 清泛网 - 专注IT技能提升
...7 添加永久性
1.8 添加和激发事件
1.9 使用窗口
1.10 COM控件
1.11 容纳控件
1.12 ATL Server Web项目
1.13 总结
第2章 字符串和文本
2.1 字符串数据类型、转换类和辅助函数
2.2 智能BSTR类CComBSTR
2.3 CComBSTR类
2.4 CString类
2...
深入解析ATL - 文档下载 - 清泛网 - 专注IT技能提升
...7 添加永久性
1.8 添加和激发事件
1.9 使用窗口
1.10 COM控件
1.11 容纳控件
1.12 ATL Server Web项目
1.13 总结
第2章 字符串和文本
2.1 字符串数据类型、转换类和辅助函数
2.2 智能BSTR类CComBSTR
2.3 CComBSTR类
2.4 CString类
2...
深入解析ATL - 文档下载 - 清泛网移动版 - 专注IT技能提升
...7 添加永久性
1.8 添加和激发事件
1.9 使用窗口
1.10 COM控件
1.11 容纳控件
1.12 ATL Server Web项目
1.13 总结
第2章 字符串和文本
2.1 字符串数据类型、转换类和辅助函数
2.2 智能BSTR类CComBSTR
2.3 CComBSTR类
2.4 CString类
2...