bashhttp-redirectstdinio-redirection

Send string to stdin

Is there a way to effectively do this in bash:

/my/bash/script < echo 'This string will be sent to stdin.'

I'm aware that I could pipe the output from the echo such as this:

echo 'This string will be piped to stdin.' | /my/bash/script
Solution

  • You can use one-line heredoc

    cat <<< "This is coming from the stdin"

    the above is the same as

    cat <<EOF
This is coming from the stdin
EOF

    or you can redirect output from a command, like

    diff <(ls /bin) <(ls /usr/bin)

    or you can read as

    while read line
do
   echo =$line=
done < some_file

    or simply

    echo something | read param