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How to get the start time of a long-running Linux process?
... like this command:
ps -eo pid,lstart,cmd
The above command will output all processes, with formatters to get PID, command run, and date+time started.
Example (from Debian/Jessie command line)
$ ps -eo pid,lstart,cmd
PID CMD STARTED
1 Tue Jun 7 01...
How is the AND/OR operator represented as in Regular Expressions?
...now try to match the string given by the user with the following, automatically created, regex expression:
5 Answers
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iphone ios running in separate thread
... everything you need with performSelector:withObject:afterDelay: and avoid all of the issues that come with multi-threaded programming.
– Jacques
Oct 6 '10 at 4:15
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Can you explain the HttpURLConnection connection process?
...how to use HTTPURLConnection but I want to understand how it works. Basically, I want to know the following:
5 Answers
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What is the difference between D3 and jQuery?
...jQuery you directly manipulate elements, but with D3 you provide data and callbacks through D3's unique data(), enter() and exit() methods and D3 manipulates elements.
D3 is usually used for data visualization but jQuery is used for creating web apps. D3 has many data visualization extensions and jQ...
Return value in a Bash function
...t should provide data cannot also echo other stuff to stdout, because the caller using $() will receive that too and get confused or have to parse the output. Global variables are not great because it's just a matter of time before you use the same global var in two places that happen to be nested a...
How to make git-diff and git log ignore new and deleted files?
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Is there a way to actually exclude just one type of data? Something like --diff-filter=!D
– Kamil Dziedzic
Aug 29 '14 at 8:44
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Declaring an unsigned int in Java
... however, are different. As of Java SE 8, new methods in the Integer class allow you to fully use the int data type to perform unsigned arithmetic:
In Java SE 8 and later, you can use the int data type to represent an unsigned 32-bit integer, which has a minimum value of 0 and a maximum value of...
Remove redundant paths from $PATH variable
...<the name of the user>/.bashrc file. the /etc/bash.bashrc applies to all users.
– hovanessyan
Jul 25 '12 at 13:59
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What are the most widely used C++ vector/matrix math/linear algebra libraries, and their cost and be
...t seems that many projects slowly come upon a need to do matrix math, and fall into the trap of first building some vector classes and slowly adding in functionality until they get caught building a half-assed custom linear algebra library, and depending on it.
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