What is the difference between test, [, and [[ in terms of binary vs. builtin?
74254
How to distinguish between builtin and external util? (e.g. echo)
29388
What is the difference between these arrays?
155152
What does [&] mean before function?
96838
Is the behaviour of .* to include . and .. defined in LSB or POSIX or some other specification?
120303
no operator "<<" matches these operands
131697
The difference between bracket [ ] and double bracket [[ ]] for accessing the elements of a list or dataframe
105563
Posix Character Sets difference between [[:blank:]] and [[:space:]]?
39485
Why does ('0' ? 'a' : 'b') behave different than ('0' == true ? 'a' : 'b')
62690
Usage of -n and -z in test built in - Bash
7826
Why did Mathematica choose brackets for function arguments over parentheses?
103488
What is the difference between list and list[:] in python?
126379
What do square brackets, "[]", mean in function/class documentation?
64769
What is the difference between \empty and \@empty?
143939
How do you use: isalnum, isdigit, isupper to test each character of a string?
89595
What is the difference of \mathop, \operatorname and \DeclareMathOperator?
127039
What is the difference between & and && in Java?
134050
Question about set notation: what does $]a,b[$ mean?