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linux下iptables配置详解 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...-A INPUT -p tcp --dport 80 -j ACCEPT
如果做了邮件服务器,开启25,110端口.
[root@tp ~]# iptables -A INPUT -p tcp --dport 110 -j ACCEPT
[root@tp ~]# iptables -A INPUT -p tcp --dport 25 -j ACCEPT
如果做了FTP服务器,开启21端口
[root@tp ~]# iptables -A INPUT -p tcp --dport 21 -j...
Find a value anywhere in a database
... @TableName nvarchar(256), @ColumnName nvarchar(128), @SearchStr2 nvarchar(110)
SET @TableName = ''
SET @SearchStr2 = QUOTENAME('%' + @SearchStr + '%','''')
WHILE @TableName IS NOT NULL
BEGIN
SET @ColumnName = ''
SET @TableName =
(
SELECT MIN(QUOTENAME(TABLE_SCHEMA) + '.' + QU...
What's the difference between ContentControl and ContentPresenter?
....microsoft.com/en-us/library/system.windows.controls.contentpresenter(v=vs.110).aspx), it uses a button as an example. A Button has a ContentControl, which allows you to place one control or a custom control that could be an Image, Text, CheckBox, StackPanel, Grid, whatever.
After the customizatio...
What is the difference between UTF-8 and Unicode?
... IS a character space from 0x04000000 to 0x7FFFFFFF, or in binary it's 1111110v 10vvvvvv 10vvvvvv 10vvvvvv 10vvvvvv 10vvvvvv - and that's indeed 6 bytes. However, 6 bytes IS the maximum, and not as the article confusingly claims "six bytes or more".
– syntaxerror
...
Bootstrap css hides portion of container below navbar navbar-fixed-top
...and (min-width:768px) and (max-width: 991px) {
body { padding-top: 110px; }
}
@media screen and (min-width: 992px) {
body { padding-top: 60px; }
}
</style>
One note, when my menu width is between 768 and 991, the menu logo in my layout plus the <li> options ...
How to iterate over rows in a DataFrame in Pandas
... pd
import numpy as np
df = pd.DataFrame({'c1': [10, 11, 12], 'c2': [100, 110, 120]})
for index, row in df.iterrows():
print(row['c1'], row['c2'])
10 100
11 110
12 120
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improve this ...
Strange out of memory issue while loading an image to a Bitmap object
... - There's a big problem with that code. ^ doesn't raise 2 to a power, it xors 2 with the result. You want Math.pow(2.0, ...). Otherwise, this looks good.
– DougW
Oct 13 '10 at 7:42
...
surface plots in matplotlib
...your 3-tuples to 3 1d arrays.
data = [(1,2,3), (10,20,30), (11, 22, 33), (110, 220, 330)]
X,Y,Z = zip(*data)
In [7]: X
Out[7]: (1, 10, 11, 110)
In [8]: Y
Out[8]: (2, 20, 22, 220)
In [9]: Z
Out[9]: (3, 30, 33, 330)
Here's mtaplotlib delaunay triangulation (interpolation), it converts 1d x,y,z into...
Improving bulk insert performance in Entity framework [duplicate]
...tityContainerMapping.EntitySetMaps' not found."
– cjb110
Nov 13 '14 at 10:27
Which version of EF are you using?
...
Why is address zero used for the null pointer?
... costly than now. The number zero can be conveniently calculated using an XOR instruction or without the need to load an immediate value. Depending upon the architecture, this could potentially save space.
– Sparky
May 3 '10 at 17:46
...