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How to apply shell command to each line of a command output?
Suppose I have some output from a command (such as ls -1 ):
8 Answers
8
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JavaScript - cannot set property of undefined
...ever set d[a] to any value.
Because of this, d[a] evaluates to undefined, and you can't set properties on undefined.
If you add d[a] = {} right after d = {} things should work as expected.
Alternatively, you could use an object initializer:
d[a] = {
greetings: b,
data: c
};
Or you coul...
How to @link to a Enum Value using Javadoc
... edited Sep 9 '19 at 13:20
Andrew Tobilko
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answered Oct 5 '09 at 17:20
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Mongod complains that there is no /data/db folder
..., e.g. sudo mkdir -p /data/db
Or you need to do su - to become superuser, and then create the directory with mkdir -p /data/db
Note:
MongoDB also has an option where you can create the data directory in another location, but that's generally not a good idea, because it just slightly complicate...
Why use deflate instead of gzip for text files served by Apache?
What advantages do either method offer for html, css and javascript files served by a LAMP server. Are there better alternatives?
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How to change the docker image installation directory?
...ker/daemon.json
(according to https://docs.docker.com/engine/reference/commandline/dockerd/#daemon-configuration-file).
With older versions, you can change Docker's storage base directory (where container and images go) using the -goption when starting the Docker daemon. (check docker --help).
You ...
Combine --user with --prefix error with setup.py install
...e advantage of Python's relatively new per user site-packages directory , and the new option --user . (The option is currently undocumented , however it exists for Python 2.6+; you can see the help by running python setup.py install --help .)
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How to add a line break in C# .NET documentation
...can wrap text in <para></para> tags as a way to group the text and add the blank line after it, but there is no equivalent to <br /> or anything like that. (Which according to this old MS forum post is by design.) You can get the list of available tags in this documentation articl...
How to use a servlet filter in Java to change an incoming servlet request url?
...raightforward java.lang.String methods like substring(), split(), concat() and so on to extract the part of interest and compose the new path.
Use either ServletRequest#getRequestDispatcher() and then RequestDispatcher#forward() to forward the request/response to the new URL (server-side redirect, n...
How to verify that a specific method was not called using Mockito?
...is there §4 "Verifying exact number of invocations / at least x / never", and the never javadoc is here.
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