23 lines
272 B
Bash
23 lines
272 B
Bash
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#shell
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#This script computes the factorial
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if [ $# -ne 1 ]
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then
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echo usage: fact.sh number
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exit
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fi
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if [ -z $factorial ]
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then
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export factorial=$1
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else
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let factorial=factorial*$1
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fi
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echo .
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if [ $1 -le 1 ]
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then
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echo $factorial
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unset factorial
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else
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let a=$1-1
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./fact.sh $a
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fi
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