So it is the same as you have typed foo. txt (after truncating the file if it already exists). txt causes the shell to redirect standard output so that it is written to file. txt, with the spaces, > file. What is the mechanism / internal difference how ls and similar commands access the filesystem, compared to echo *? what is happening underneath? Oct 12, 2016 · How to understand the output of echo $-? It looks like some kind of flag characters. When a redirection operator is prefixed with an unquoted number, with no separation, the redirection applies to the corresponding file descriptor May 7, 2017 · What output did you expect from echo < file. I can't get a clue by googling. int main() { return 1; } Dec 21, 2019 · I referred to this answer to change my default shell How to change default shell to ZSH - chsh says &quot;invalid shell&quot; After adding zsh to /etc/shells and doing sudo chsh -s "$(command -v z The echo program receives one long string that includes the newline characters. Since the command foo does not exist, bash complains about it. Variables aside, this is the same behavior you get with quotes around literal values.

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