bash string
Bashsupportsasurprisingnumberofstringmanipulationoperations.Unfortunately,thesetoolslackaunifiedfocus.Someareasubsetofparameter ...,2020年10月24日—[]用法1:Test(不建議使用)·字串比較[]=!=if[$a!=$b];then#加雙引號避免沒宣告,也可不加·字串長度是否為0,...
Shell Parameter Expansion (Bash Reference Manual)
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stringundergoestildeexpansion,parameterandvariableexpansion,arithmeticexpansion,commandandprocesssubstitution,andquoteremoval.Thematchis ...
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