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In Bash, how do I add a string after each line in a file?
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edited May 13 at 12:05
answered May 13 at 11:59
欢...
C/C++ macro string concatenation
...fragment
#define PPCAT_NX(A, B) A ## B
PPCAT_NX("s", "1")
produces this error message from the preprocessing phase of gcc: error: pasting ""s"" and ""1"" does not give a valid preprocessing token
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However, for general token pasting, try this:
/*
* Concatenate preprocessor tokens A and B wit...
Catching “Maximum request length exceeded”
... to catch such exception unfortunately. What I do is either override the OnError method at the page level or the Application_Error in global.asax, then check if it was a Max Request failure and, if so, transfer to an error page.
protected override void OnError(EventArgs e) .....
private void Appl...
DISTINCT for only one column
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If you are using SQL Server 2005 or above use this:
SELECT *
FROM (
SELECT ID,
Email,
ProductName,
ProductModel,
ROW_NUMBER() OVER(PARTI...
Transport endpoint is not connected
...ly (every 2 - 3 days) giving me this Transport endpoint is not connected error on my mount point and the only thing that seems to fix it is rebooting.
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程序员之网络安全系列（五）：数字证书以及12306的证书问题 - 更多技术 - ...
...通过，但是浏览器的锁还是没有变绿。
为什么呢？ 看提示，是因为12306使用了一个比较弱的机密算法（This site uses a weak security configuration (SHA-1 signatures), so your connection may not be private.），我猜他们是为了性能？？
但是，就算...
How to remove convexity defects in a Sudoku square?
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I am getting error: output[ri*50:(ri+1)*50-1 , ci*50:(ci+1)*50-1] = warp[ri*50:(ri+1)*50-1 , ci*50:(ci+1)*50-1].copy TypeError: long() argument must be a string or a number, not 'builtin_function_or_method'
– use...
Does Java support default parameter values?
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answered Jun 15 '09 at 18:05
Rob HRob H
12.4k88 gold badges3737 silver badges4444 bronze badges
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Trying to SSH into an Amazon Ec2 instance - permission error
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The error message says it all: the .pem cert file is not protected enough. Do chmod 400 xyz.pem as suggested below.
– allprog
Oct 31 '12 at 22:06
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How to make “if not true condition”?
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I think it can be simplified into:
grep sysa /etc/passwd || {
echo "ERROR - The user sysa could not be looked up"
exit 2
}
or in a single command line
$ grep sysa /etc/passwd || { echo "ERROR - The user sysa could not be looked up"; exit 2; }
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