83 lines
743 B
Text
83 lines
743 B
Text
# basic cases
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a=1
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a+=4
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echo $a
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x=(1 2 3)
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x+=(4 5 6)
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echo ${x[@]}
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x[4]+=1
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echo ${x[@]}
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# trickier cases
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a+=5 printenv a
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echo $a
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# if the integer flag is set, ksh93 appears to do arithmetic += and evaluate
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# old value as an arithmetic expression
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a=
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typeset -i a
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a+=7
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echo $a
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b=4+1
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typeset -i b
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b+=37
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echo $b
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unset x
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x=(1 2 3 4 5)
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typeset -i x
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x[4]+=7
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echo ${x[@]}
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unset x
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typeset -i x
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x=([0]=7+11)
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echo ${x[@]}
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unset x
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x=(1 2 3 4 5)
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typeset -i x
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#x[4]=7+11
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x=(1 2 3 4 [4]=7+11 )
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echo ${x[@]}
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x=( 1 2 [2]+=7 4 5 )
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echo ${x[@]}
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x+=( [3]+=9 [5]=9 )
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echo ${x[@]}
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unset a
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a=1
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export a+=4
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printenv a
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printenv a+
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unset x
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typeset -i x=4+5
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echo $x
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unset x
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typeset x+=4
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echo $x
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typeset -i x+=5
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echo $x
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readonly x+=7
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echo $x
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x+=5
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