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How to check if command line tools is installed

I have a macbook pro with OS X 10.8.2. XCode is installed. I know this as it appears in the Applications directory. There are also the xcodebuild and xcode-select files in /usr/bin I need to know if the command line tools is installed. Is there a command for it? What can I do to see if XCode CLT is ...
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Clear terminal in Python [duplicate]

... Note that this is not portable across all terminal types... not that you'll run into too many odd types these days... – Ignacio Vazquez-Abrams Jan 18 '10 at 7:44 ...
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rmagick gem install “Can't find Magick-config”

I get the error shown below when attempting to install the rmagick gem. I am on Snowleopard 10.6 using RVM, Ruby 1.9.2-head and Rails 3.05. Responses to similar questions recommended installing ImageMagick, which I successfully did. Other suggested installing the "libmagick9-dev library", however, I...
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How do I check whether a file exists without exceptions?

...open it. If you're not planning to open the file immediately, you can use os.path.isfile Return True if path is an existing regular file. This follows symbolic links, so both islink() and isfile() can be true for the same path. import os.path os.path.isfile(fname) if you need to be sure it...
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How to make an app's background image repeat

I have set a background image in my app, but the background image is small and I want it to be repeated and fill in the whole screen. What should I do? ...
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How do I pass a string into subprocess.Popen (using the stdin argument)?

...l command and get its exit status, and its output as a string back in one call: #!/usr/bin/env python3 from subprocess import run, PIPE p = run(['grep', 'f'], stdout=PIPE, input='one\ntwo\nthree\nfour\nfive\nsix\n', encoding='ascii') print(p.returncode) # -> 0 print(p.stdout) # -> fo...
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How can I develop for iPhone using a Windows development machine?

...the old Dell Precision I had at the time :) There are three routes; Install OSx86 (aka iATKOS / Kalyway) on a second partition/disk and dual boot. Run Mac OS X Server under VMWare (Mac OS X 10.7 (Lion) onwards, read the update below). Use Delphi XE4 and the macincloud service. This is a commercia...
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How can I check the system version of Android?

...ow how can I check the system version (e.g. 1.0 , 2.2 , etc.) programatically? 13 Answers ...
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Combining multiple git repositories

... git pull code $ rm -rf code/code $ rm -rf code/.git $ git pull figures --allow-unrelated-histories $ rm -rf figures/figures $ rm -rf figures/.git $ git pull thesis --allow-unrelated-histories $ rm -rf thesis/thesis $ rm -rf thesis/.git Finally, you should now have what you wanted: phd |_.git...
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Java: int array initializes with nonzero elements

...here it is not. Such a behavior occurs first in JDK 7u4 and also occurs in all later updates (I use 64-bit implementation). The following code throws exception: ...