shell operators confusion
34304
Precedence of the shell logical operators &&, ||
14252
How to represent multiple conditions in a shell if statement?
105788
Why is `[` a shell builtin and `[[` a shell keyword?
120372
How to typeset $:=$ correctly?
8641
Which are the (Bash) shell special parameters/variables?
25478
What does ${1+"$@"} mean in a shell script, and how does it differ from "$@"?
85119
While-loop subshell dilemma in Bash
11423
Understand the meaning of `$_`
145497
What does the  operator do in python?
83409
Difference between $ and # in Linux environment
119575
How are parentheses interpreted at the command line?
100299
Using dollar sign in shell scripting
41303
When do we need curly braces around shell variables?
57326
Bash - how to make explicit operator precedence without creating a subshell
8651
Bash scripting unexpected operator
155408
What's the function of the "|" (pipe) operator?
30195
What's the difference between [ and [[ in Bash?