11 lines
187 B
Bash
11 lines
187 B
Bash
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$ swap() { local var1=$1 var2=$2; set -- "${!var1}" "${!var2}"; declare -g "$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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