Bash Script to add first 10 numbers i.e 1 to 10 using control statement

I want to know how can we add the first 10 numbers using bash script. The addition should be done using control statement. D开发者_开发问答o I need to use Array ? if someone can show me an example then I would very thankful.

Thanks.

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Try this script in bash:

for i in {1..10}; do s=$((s+i)); done; echo $s

OUTPUT

55

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seq -s + 1 10 | bc -ql

This is perhaps a contrived answer, but it does the job..

• -s uses the given argument to separate the output. In this way we can build the output string for bc
• seq takes up to 3 arguments, last, first and last, or first increment and last.

bc is a calulator:

• -q means quiet
• -l means include mathlib -- probably not necessary but won't hurt.

Check out man seq/bc for the juicy details..