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SC2099
Vidar Holen edited this page Jun 28, 2018
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1 revision
i=3
i=i 2
i=3
i=$((i 2))
Unlike most languages, variable assignments in shell scripts are space sensitive and (almost) always assign strings.
To evaluate a mathematical expressions, use $((..))
as in the correct code:
i=$((i 2)) # Spaces are fine inside $((...))
In the problematic code, i=i 2
will give an error : command not found
because the expression is interpreted similar to something like LC_ALL=C wc -c
instead of numerical addition:
Prefix assignment Command Argument
LC_ALL=C wc -c
i=i 2
If you wanted to assign a literal string, quote it:
game_score="0 - 2"
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