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What are the uses of the exec command in shell scripts? [closed]
...ere are some examples:
exec 3< thisfile # open "thisfile" for reading on file descriptor 3
exec 4> thatfile # open "thatfile" for writing on file descriptor 4
exec 8<> tother # open "tother" for reading and writing on fd 8
exec 6>> other # op...
How can I build a small operating system on an old desktop computer? [closed]
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First things first. Read, read, read, read, read. You need to have a firm understanding of how the OS works before you can hope to implement your own.
Grab one of Andrew Tanenbaum's books on operating systems. This is the one we used in my OS...
Unable to read data from the transport connection : An existing connection was forcibly closed by th
...hLoginAtClient == true && ajutor < 30) { Thread.Sleep(300); ajutor++; } client = this.tcpListener.AcceptTcpClient(); Program.waitToFinishLoginAtClient = true; ........... and Program.waitToFinishAtClient gets modified in the thread that contains t...
reference assignment is atomic so why is Interlocked.Exchange(ref Object, Object) needed?
In my multithreaded asmx web service I had a class field _allData of my own type SystemData which consists of few List<T> and Dictionary<T> marked as volatile . The system data ( _allData ) is refreshed once in a while and I do it by creating another object called newData and fill...
How to avoid 'cannot read property of undefined' errors?
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Best, we can use _.get() with default for easy read : _.get(object, 'a.b.c', 'default');
– Ifnot
Jun 18 '18 at 13:53
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Getting started with Haskell
...d around the functional programming paradigm in Haskell. I've done this by reading tutorials and watching screencasts, but nothing really seems to stick.
Now, in learning various imperative/OO languages (like C, Java, PHP), exercises have been a good way for me to go. But since I don't really know w...
How to programmatically create and read WEP/EAP WiFi configurations in Android?
How to programmatically create and read WEP/EAP WiFi configurations in Android?
5 Answers
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Exception 'open failed: EACCES (Permission denied)' on Android
...evel 19, this permission is not enforced and all apps still have access to read from external storage.
– AndroidGeek
Jul 1 '15 at 8:15
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How do I make a list of data frames?
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The other answers show you how to make a list of data.frames when you already have a bunch of data.frames, e.g., d1, d2, .... Having sequentially named data frames is a problem, and putting them in a list is a good fix, but best practice is to avoid having a bunch of data.frames not in a list in ...
SmtpException: Unable to read data from the transport connection: net_io_connectionclosed
...ncorrect and had a typo. But a wrong password can also give the "Unable to read data from the transport connection: net_io_connectionclosed." error. So check both the username and password. And for Azure users, the user name is of the form "azure_guid-withoutdashes@azure.com" (eg: azure_e9e062db4bfd...