11 lines
166 B
Bash
11 lines
166 B
Bash
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$ swap() { typeset -n var1=$1 var2=$2; set -- "$var1" "$var2"; var1=$2; var2=$1; }
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$ a=1 b=2
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$ echo $a $b
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1 2
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$ swap a b
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$ echo $a $b
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2 1
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$ swap a b
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$ echo $a $b
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1 2
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