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How to redirect both stdout and stderr to a file [duplicate]
I am running a bash script that creates a log file for the execution of the command
5 Answers
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Favourite performance tuning tricks [closed]
...ndy-dandy list of things I always give to someone asking me about optimisation.
We mainly use Sybase, but most of the advice will apply across the board.
SQL Server, for example, comes with a host of performance monitoring / tuning bits, but if you don't have anything like that (and maybe even if...
Simulate airplane mode in iPhone Simulator
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Turn off your network connection on the Mac.
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Change UICollectionViewCell size on different device orientations
I am using an UICollectionView with UICollectionViewFlowLayout .
6 Answers
6
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Objective-C - Remove last character from string
In Objective-C for iOS, how would I remove the last character of a string using a button action?
4 Answers
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Getting output of system() calls in Ruby
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You can do expression evaluation just as you would with regular strings: ls #{filename}.
– Craig Walker
Dec 27 '09 at 17:38
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What should Xcode 6 gitignore file include?
...y default.
2)
Another answer is that there's a website called "gitignore.io" , which generates the files based on the .gitignore templates from https://github.com/github/gitignore.
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Why does PostgreSQL perform sequential scan on indexed column?
...ster than an index scan.
This is because an index scan requires several IO operations for each row (look up the row in the index, then retrieve the row from the heap). Whereas a sequential scan only requires a single IO for each row - or even less because a block (page) on the disk contains more...
How to check if a file exists in a folder?
... Noe that this answer returns false if the user does not have permission to read the file. So it does more than just checkinf if the file exists in a folder. You might want to use DirectoryInfo.GetFiles() and enumerate the result.
– ogborstad
Feb 10 '15 a...
What is the difference between user and kernel modes in operating systems?
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access to the underlying hardware. It
can execute any CPU instruction and
reference any memory address. Kernel
mode is generally reserved for the
lowest-level, most trusted functions
of the operating system. Crashes in
kernel mode are catastrophic; they
will halt the entire PC.
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