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Delete all lines beginning with a # from a file
...he problem as stated.
But note that a common convention is for everything from a # to the end of a line to be treated as a comment:
sed 's/#.*$//' filename
though that treats, for example, a # character within a string literal as the beginning of a comment (which may or may not be relevant for y...
Merge a Branch into Trunk
I'm facing a peculiar problem with SVN merge . I want to merge from a dev branch to trunk.
We have multiple dev branches cut off the trunk at the same time.
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Where do I find the definition of size_t?
I see variables defined with this type but I don't know where it comes from, nor what is its purpose. Why not use int or unsigned int? (What about other "similar" types? Void_t, etc).
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How to handle :java.util.concurrent.TimeoutException: android.os.BinderProxy.finalize() timed out af
...lize . 90+% of them happen on Android 4.3. We're getting reports of this from Crittercism from users out in the field.
11...
Using the RUN instruction in a Dockerfile with 'source' does not work
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Original Answer
FROM ubuntu:14.04
RUN rm /bin/sh && ln -s /bin/bash /bin/sh
This should work for every Ubuntu docker base image. I generally add this line for every Dockerfile I write.
Edit by a concerned bystander
If you want to...
Why do stacks typically grow downwards?
...early CPUs. For example, the Motorola 6809 would fetch the program counter from addresses 0xfffe/f so you could start running at an arbitrary location, depending on what was supplied at that address (usually, but by no means limited to, ROM).
One of the first things some historical systems would d...
How to limit the maximum value of a numeric field in a Django model?
...model-fields/#howto-custom-model-fields
In this case, you could 'inherit' from the built-in IntegerField and override its validation logic.
The more I think about this, I realize how useful this would be for many Django apps. Perhaps a IntegerRangeField type could be submitted as a patch for the D...
Find out a Git branch creator
...emotes | awk -F "\t" '{ printf "%-32s %-27s %s\n", $1, $2, $3 }' (got idea from stackoverflow.com/a/3631819 - may need to adjust numbers in the awk printf depending on max datetime/author name lengths)
– Gary S. Weaver
Apr 2 '15 at 13:38
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How to change the opacity (alpha, transparency) of an element in a canvas element after it has been
...ay to achieve it is the setTimeout function, look that up to create a loop from which you alter the alpha over time.
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How can I add reflection to a C++ application?
...iterate over the fields we use the visitor pattern. We create an MPL range from 0 to the number of fields, and access the field data at that index. Then it passes the field data on to the user-provided visitor:
struct field_visitor
{
template<class C, class Visitor, class I>
void oper...