Bash += and -=: Difference between revisions

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1
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Also:
<syntaxhighlight lang='bash'>
<syntaxhighlight lang='bash'>
i=0
i=0

Revision as of 05:36, 8 May 2020

External

Internal

Overview

+= and -= are assignment operators that can be used to increment/decrement the value of the left operand with the value specified after the operator. The operators can be used on integral values as such:

i=0
((i+=1))
echo ${i}

displays:

1

Also:

i=0
((i-=1))
echo ${i}

displays:

-1

The += can be used on string values as such: