linux - echo command behaviour issue in bash -

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command="echo 'hello world' > file.txt"; $command;

and i'm expecting write "hello world" text file.txt, prints whole string as,

'hello world' > file.txt

what wrongs code?

after variable replaced, result scanned word splitting , wildcard expansion. other special shell characters, such quotes , redirection, not processed. need use eval reprocess completely:

eval "$command"

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