CODEWITHSUNDEEP
shell
vishal
vishal

Reputation: 43

script is not giving correct the output in Cygwin

I am facing a problem in Cygwin when I execute the below command in Unix Environment then output is coming different as compare to Cygwin

echo 0000036703386618|awk '{$1=$1+0; print $1}'

Output is in Unix 

36703386618

Output is in Cygwin

3.67034e+10

Please assist

Upvotes: 0

Views: 86

Answers (1)

Anya Shenanigans
Anya Shenanigans

Reputation: 94604

Awk doesn't actually store the value as an integer, it stores it as a floating point value, so you're probably getting an output error due to the outputter being unable to display a > 32bit value in a non-scientific format (this is just a guess, but it's what happens when we switch to mawk)

natsu ~> echo 0000036703386618|mawk '{$1=$1+0; print $1}'
3.67034e+10
natsu ~> echo 0000036703386618|gawk '{$1=$1+0; print $1}'
36703386618

bear in mind that because of the internal representation of the value, it will produce some undesirable results:

natsu ~> echo 0000036703386618000000000|gawk '{$1=$1+0; print $1}'
36703386617999998976

Once you're dealing with 64bit numbers, though, you should start using something that handles them properly - e.g. bc

natsu ~> bc <<<"0000036703386618000000000 + 0"
36703386618000000000

... the prior example uses the <<< bash redirect to take stdin from a string/variable instead of having to do a echo "$var" |

Upvotes: 2

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