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How do I list all versions of a gem available at a remote site?
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According to RubyGem's Guide you should use the search keyword. So the command could be:
gem search rhc --all
If you want the exact name use:
gem search ^rhc$ --all
If you want to include prerelease versions use --pre
gem search ^rhc$ ...
How to get a URL parameter in Express?
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Cannot deserialize the JSON array (e.g. [1,2,3]) into type ' ' because type requires JSON object (e.
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How to tell if a string is not defined in a Bash shell script
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I think the answer you are after is implied (if not stated) by Vinko's answer, though it is not spelled out simply. To distinguish whether VAR is set but empty or not set, you can use:
if [ -z "${VAR+xxx}" ]; then echo VAR is not set at all; fi
if [ -z "$VAR" ] && [ "${VAR+xx...
How do I update zsh to the latest version?
...rmeli Homebrew shouldn't mess with gem installations—I use both it and Rubygems all the time. Homebrew's very useful and it's worth fixing whatever problems you're having with it. That said, I don't know that I want to use it to replace Apple's zsh...
– Marnen Laibow-Koser
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How to get the mouse position without events (without moving the mouse)?
..., width, height dynamically to divide the yet possible locations on screen by 2-4 recursively, thus finding the mouse real location quickly.
For example - first elements take right and left half of screen, afterwards the upper and lower half. By now we already know in which quarter of screen the mo...
How to change variables value while debugging with LLDB in Xcode?
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Conda: Installing / upgrading directly from github
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Providing a default value for an Optional in Swift?
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Start service in Android
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