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Bash is an implementation of the shell concept and is often used during Python software development as part of a programmer's development environment. Bash is an implementation of the shells concept.
Python pass Statement The pass statement is used as a placeholder for future code. When the pass statement is executed, nothing happens, but you avoid getting an error when empty code is not allowed. Empty code is not allowed in loops, function definitions, class definitions, or in if statements.
$() means: "first evaluate this, and then evaluate the rest of the line". Ex : echo $(pwd)/myFile.txt. will be interpreted as echo /my/path/myFile.txt. On the other hand ${} expands a variable.
You can use : for this.
true is a command that successfully does nothing.
(false would, in a way, be the opposite: it doesn't do anything, but claims that a failure occurred.)
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