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What is the difference between a port and a socket?
...because a connection is identified by both its local and remote endpoints, allowing traffic to be routed to a specific service instance.
There can only be one listener socket for a given address/port combination.
Exposition
This was an interesting question that forced me to re-examine a number of...
How do I upgrade my ruby 1.9.2-p0 to the latest patch level using rvm?
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First of all, update your RVM installation by running rvm get stable.
To make sure you're running the new RVM version, you'll then need to run rvm reload (or just open a new terminal).
Once that's done, you can ask RVM to list the r...
Hand Coded GUI Versus Qt Designer GUI [closed]
... compile into your application. We started using for that purpose but with all generated code, once you edit it, you can no longer go back and regenerate it without losing your edits. We ended up just taking the generated code and doing everything by hand henceforth.
Qt4
Qt4 has improved on Design...
Finding current executable's path without /proc/self/exe
...e) method is to use argv[0]. Although it could be set to anything by the calling program, by convention it is set to either a path name of the executable or a name that was found using $PATH.
Some shells, including bash and ksh, set the environment variable "_" to the full path of the executable be...
git: abort commit in the middle of typing message
...he commit message into one of vim's buffers.
It's worth noting that you really don't have to do this at all: commit --amend lets you alter the commit after it's made, so the easy solution is to produce the commit with what you've got and then fix it before pushing. You can even just finish the comm...
Is there a setting on Google Analytics to suppress use of cookies for users who have not yet given c
... implement a mechanism where, on first visit, Google Analytics is automatically disabled in the absence of an opt-in cookie (cookies that determine cookie preferences are explicitly allowed), and then, if an opt-in happens, re-runs Google Analytics. On subsequent pageviews, all would run smoothly.
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How can I reset or revert a file to a specific revision?
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@aliteralmind: Actually, yes, there's a way to do it: "git log --reverse -1 --ancestry-path yourgitrev..master" and then use the appropriate options to just get the git rev. --ancestry-path will "draw a line" between two commits and -1 will sho...
How can I find out the total physical memory (RAM) of my linux box suitable to be parsed by a shell
...d this recently, and have a simple command to get the total memory size of all memory modules on a system: dmidecode -t 17 | grep "Size.*MB" | awk '{s+=$2} END {print s / 1024}'
– Jonesinator
Jun 18 '14 at 23:53
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Resolving conflicts: how to accept “their” changes automatically?
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Use
hg resolve -t internal:other --all
to accept theirs and
hg resolve -t internal:local --all
to accept yours
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javax.faces.application.ViewExpiredException: View could not be restored
...ession cookie is not maintained anymore for some reason in browser, or by calling HttpSession#invalidate() in server, or due a server specific bug with session cookies as known in WildFly), then the serialized view state is not available anymore in the session and the enduser will get this exception...