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TCP: can two different sockets share a port?
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A server socket listens on a single port. All established client connections on that server are associated with that same listening port on the server side of the connection. An established connection is uniquely identified by the comb...
How do I copy the contents of a String to the clipboard in C#? [duplicate]
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bluish
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answered May 22 '09 at 18:42
ravuyaravuya
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In Android, how do I set margins in dp programmatically?
... edited Mar 6 '14 at 15:01
slhck
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answered Oct 4 '12 at 13:36
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Regarding 'main(int argc, char *argv[])' [duplicate]
...l where an user could type cat file. Here the word cat is a program that takes a file and outputs it to standard output (stdout).
The program receives the number of arguments in argc and the vector of arguments in argv, in the above the argument count would be two (The program name counts as the fi...
How do you create a read-only user in PostgreSQL?
I'd like to create a user in PostgreSQL that can only do SELECTs from a particular database. In MySQL the command would be:
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Why doesn't Java support unsigned ints?
...derstand what goes on with unsigned, what unsigned arithmetic is. Things like that made C complex. The language part of Java is, I think, pretty simple. The libraries you have to look up.
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How can I start an interactive console for Perl?
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You can use the perl debugger on a trivial program, like so:
perl -de1
Alternatively there's Alexis Sukrieh's Perl Console application, but I haven't used it.
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Pipe output and capture exit status in Bash
...t.txt ; test ${PIPESTATUS[0]} -eq 0
Or another alternative which also works with other shells (like zsh) would be to enable pipefail:
set -o pipefail
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The first option does not work with zsh due to a little bit different syntax.
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How can I get the current user's username in Bash?
...variable=$(whoami)
or
myvariable=$USER
Of course, you don't need to make a variable since that is what the $USER variable is for.
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How to convert a column number (e.g. 127) into an Excel column (e.g. AA)
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community wiki
Graham
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