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Linux/Unix command to determine if process is running?

I need a platform independent (Linux/Unix|OSX) shell/bash command that will determine if a specific process is running. e.g. mysqld , httpd ... What is the simplest way/command to do this? ...
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Difference between binary semaphore and mutex

... They are NOT the same thing. They are used for different purposes! While both types of semaphores have a full/empty state and use the same API, their usage is very different. Mutual Exclusion Semaphores Mutual Exclusion semaphores are used to protect shared resources (data structure...
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Is gettimeofday() guaranteed to be of microsecond resolution?

...that was originally written for the Win32 API, to Linux (well, porting the OS X port of the Win32 port to Linux). 10 Answer...
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Fast permutation -> number -> permutation mapping algorithms

I have n elements. For the sake of an example, let's say, 7 elements, 1234567. I know there are 7! = 5040 permutations possible of these 7 elements. ...
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pg_config executable not found

... pg_config is in postgresql-devel (libpq-dev in Debian/Ubuntu, libpq-devel on Centos/Cygwin/Babun.) share | improve this answer | ...
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Clicking URLs opens default browser

...y iframe within the page with a custom scheme URL (say <iframe src="tel:123"/>) it will navigate your app's main frame to that URL most likely breaking the app as a side effect. – marcin.kosiba Feb 7 '14 at 12:35 ...
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How do I add a path to PYTHONPATH in virtualenv

... I want to add a friendly comment that on shared hosts and similar situations venv wrapper is not desired. In such cases one venv is in effect and all that is needed making the additional install is not desired. Locally things are different, but on server/image KISS is reall...
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Is it possible to specify condition in Count()?

... AdaTheDevAdaTheDev 123k2424 gold badges179179 silver badges181181 bronze badges ...
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How to check for a valid URL in Java?

...nswered Dec 19 '12 at 18:26 user123444555621user123444555621 123k2323 gold badges101101 silver badges120120 bronze badges ...
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TypeScript, Looping through a dictionary

...orted on TypeScript playground at this time. – Seanny123 Jan 18 '17 at 12:28 1 See here how to ma...