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Can you have a dash in a variable name?
A ‘word’ consisting solely of letters, numbers, and underscores, and beginning with a letter or underscore. ‘Name’s are used as shell variable and function names. Also referred to as an ‘identifier’. So you can’t use a hyphen in a name.
What does hyphen do in Linux?
We all know that when we use hyphen after the command cd , we will change to the previous working directory; and when we use hyphen after the input redirection << , the bash will ignore the leading tabs (but not spaces) in the here script.
What does dash h mean?
The hyphen ‐ is a punctuation mark used to join words and to separate syllables of a single word. The use of hyphens is called hyphenation. Son-in-law is an example of a hyphenated word.
How do I set an environment variable in dash?
To add environment variables via the Dash Enterprise UI, navigate to the application settings. Here, use the text boxes to add the environmental variable name and value. For example, “DATABASE_USER” and “DATABASE_PASSWORD”. Referencing Environment Variables in Your Code
What do you use dash for in Python?
Setting Environment Variables | Dash for Python Documentation | Plotly Environment variables are commonly used to store secret variables like database passwords. Setting Environment Variables | Dash for Python Documentation | Plotly
How to create a local variable in Bash?
Create a local variable called NAME, and give it VALUE. OPTION can be any option accepted by `declare’. Local variables can only be used within a function; they are visible only to the function where they are defined and its children.
When to use dash in multi user environments?
Dash is designed to work in multi-user environments where multiple people may view the application at the same time and will have independent sessions. If your app uses modified globalvariables,