Double-quoting (vs not) variables in [ and [[
4332
Why does parameter expansion with spaces without quotes work inside double brackets "[[" but not inside single brackets "["?
42407
How to add double quotes to a string that is inside a variable?
36293
What's the difference between using single and double quotation marks/inverted commas?
138938
What is the difference between `a[bc]d` (brackets) and `a{b,c}d` (braces)?
30206
Where and how is the _ (underscore) variable specified?
51624
Isn't there any other way of doing double quotes in LaTeX besides `` +  ''?
53710
Quoting in a function results in error
24458
What do ">>" and "<<" mean in Javascript?
39457
Why is \[ ... \] preferable to $$ ... $$?
55435
Parenthesis vs brackets for matrices
155612
Single vs double quotes in JSON
30027
Is there a difference between single and double quotes in Java?
131930
How does storing the regular expression in a shell variable avoid problems with quoting characters that are special to the shell?
102145
Single or Double quotes when defining an alias?
110452
Why does exclamation mark within double quotes cause a Bash error?
131353
Typesetting double brackets and double parentheses
102345
Should I use curly brackets or concatenate variables within strings?