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05-17-2008
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Just to clarify things. You can have periods (full stops) in variable names but only in shells that support hierarchical name spaces (AKA compound variables) such as ksh93.
Code:
#!/usr/bin/ksh93
myvar=( name="era" job="herder" rest="of Useless Cats" )
var="era"
var.name="herder"
var.name.rest="of Useless Cats"
print ${myvar.rest}
print ${var.name.rest}
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