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bash assign default value

I thought I could use this feature to write ${LONG_VARIABLE_NAME:=hello} instead of the longer LONG_VARIABLE_NAME=${LONG_VARIABLE_NAME:-hello} , but now bash also tries to execute 'hello' and that gives a command not found. Any way to avoid that? Or will I have to stick to the latter? Can someone...
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How do I negate a test with regular expressions in a bash script?

...ke to negate a test with Regular Expressions. For example, I would like to conditionally add a path to the PATH variable, if the path is not already there, as in: ...
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The thread has exited with code 0 (0x0) with no unhandled exception

While debugging my C# application I have noticed a large amount occurrences of the following sentence: 7 Answers ...
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An “and” operator for an “if” statement in Bash

I'm trying to create a simple Bash script to check if the website is down and for some reason the "and" operator doesn't work: ...
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How do you remove the root CA certificate that fiddler installs

Fiddler helpfully offers to add a unique root CA certificate to intercept HTTPS traffic. 4 Answers ...
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Assign pandas dataframe column dtypes

I want to set the dtype s of multiple columns in pd.Dataframe (I have a file that I've had to manually parse into a list of lists, as the file was not amenable for pd.read_csv ) ...
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What is the relationship between the docker host OS and the container base image OS?

I'm not certain that I'm asking the right question... but while I have been reading everything docker that I can get my hands on I see that I can install Docker on Ubuntu 12.04 (for example) and then I can install a Fedora container or a different version of ubuntu? (there is an example where the us...
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Docker: adding a file from a parent directory

In my Dockerfile I've got : 6 Answers 6 ...
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Multiple columns index when using the declarative ORM extension of sqlalchemy

According to the documentation and the comments in the sqlalchemy.Column class, we should use the class sqlalchemy.schema.Index to specify an index that contains multiple columns. ...
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String.IsNullOrWhiteSpace in LINQ Expression

I have the following code: 5 Answers 5 ...