bash variable substitution
ParameterSubstitution.Manipulatingand/orexpandingvariables.$parameter}.Sameas$parameter,i.e.,valueofthevariableparameter....#!/bin/bash#Check ...,2015年1月7日—Thisexpandsglobsiftheyoccurinthestring.You'dwanttouseset-ftopreventthat.Italsoactsliket...
Variable Substitution
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Thenameofavariableisaplaceholderforitsvalue,thedataitholds.Referencing(retrieving)itsvalueiscalledvariablesubstitution.$.Letus ...
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