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2

Where you remove the parentheses, this is exactly @miku's original answer at the top.
– dolmen
Commented Mar 4, 2016 at 13:56
1

Without parentheses the expression doesn't evaluate.
– will
Commented Mar 6, 2016 at 11:01
@will yes it does. You dont need the ()s.
– phil294
Commented Nov 3, 2017 at 17:00
1

@Blauhirn ... Hi, I based my comments on experiments with GNU Bash on a Linux Mint /Ubuntu PC. You are probably right in theory ()-s are not needed. My only response, is try it out, it seems to depend on Bash version, the actual expression or context and such.
– will
Commented Nov 6, 2017 at 7:13
This is obviously (to me) the most clear syntax, but there's gotta be a catch somewhere. I don't think it works with integer values: > bucket_available=0; > if ($bucket_available); then echo hi; fi bash: 0: command not found
– Max Cascone
Commented May 19, 2023 at 16:11

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