Armazena 2 ^ 500 em uma variável no bash

Question

Eu quero armazenar o valor de 2 ^ 500 na variável DELTA .

Estou fazendo

export DELTA=$(echo "scale=2; 2^500" | bc)

mas isso não define DELTA para 3273390607896141870013189696827599152216642046043064789483291368096133796404674554883270092325904157150886684127560071009217256545885393053328527589376 . Em vez disso, define para

32733906078961418700131896968275991522166420460430647894832913680961\
33796404674554883270092325904157150886684127560071009217256545885393\
053328527589376

Eu tentei as respostas em esta pergunta (3 anos de idade), usando

export DELTA=$(echo "scale=2; 2^500" | bc | tr '\n' ' ') 

ou

export DELTA=$(echo "scale=2; print 2^500" | bc | tr '\n' ' ')

mas nenhum deles trabalha para definir a variável, apenas para ecoar. Alguma idéia?

    

Answer 1

echo "scale=2; 2^500" | bc | tr -d '\n\'

Saída:

3273390607896141870013189696827599152216642046043064789483291368096133796404674554883270092325904157150886684127560071009217256545885393053328527589376

    

Answer 2

Na implementação GNU de bc , existe a variável de ambiente BC_LINE_LENGTH (cf man bc ):

~$ echo "scale=2; 2^500" | bc
32733906078961418700131896968275991522166420460430647894832913680961\
33796404674554883270092325904157150886684127560071009217256545885393\
053328527589376
~$ export BC_LINE_LENGTH=99999 #or better 0
~$ echo "scale=2; 2^500" | bc
3273390607896141870013189696827599152216642046043064789483291368096133796404674554883270092325904157150886684127560071009217256545885393053328527589376

    

Answer 3

Pensando fora da caixa:

export DELTA=$(python -c 'print(2**500)')

    

Answer 4

> echo "scale=2; 2^500" | bc | { read value; echo "$value";}
3273390607896141870013189696827599152216642046043064789483291368096133796404674554883270092325904157150886684127560071009217256545885393053328527589376

    

Answer 5

$ echo "scale=2; 2^500" | bc | perl -pe 's/\\n//'
3273390607896141870013189696827599152216642046043064789483291368096133796404674554883270092325904157150886684127560071009217256545885393053328527589376