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bc

An arbitrary precision calculator language. See also: dc. More information: https://manned.org/bc.1.

Start an interactive session:

bc

Start an interactive session with the standard math library enabled:

bc --mathlib

Calculate an expression:

echo '{{5 / 3}}' | bc

Execute a script:

bc {{path/to/script.bc}}

Calculate an expression with the specified scale:

echo 'scale = {{10}}; {{5 / 3}}' | bc

Calculate a sine/cosine/arctangent/natural logarithm/exponential function using mathlib:

echo '{{s|c|a|l|e}}({{1}})' | bc --mathlib