Conditional expressions in shell: What are the differences between [ vs [[
105788
Why is `[` a shell builtin and `[[` a shell keyword?
41303
When do we need curly braces around shell variables?
12016
When to use \par and when \\, \newline, or blank lines
156273
What is the difference between "var=${var:-word}" and "var=${var:=word}"?
106701
Bash: What does ">|" do?
79418
use regular expression in if-condition in bash
83225
Difference between single and double square brackets in Bash
54526
How to form "if ... or ... then" conditionals in TeX?
977
What is the difference between [@] and [*] when referencing bash array values?
909
What is this shell/Bash syntax: someVariable=someValue someCommand
83709
Separator between command list and }
34893
Is there a difference between the '&&' and ';' symbols in a standard BASH terminal?
107557
Shell usage of ":-" and advantage
50931
What is the difference between #!/bin/sh and #!/bin/bash?
134273
Bash: Why does this Brace Expression work this way?
158157
What does “{} \;” mean in find (in Linux)?
83409
Difference between $ and # in Linux environment