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Sometimes you want to write the script output to stdout but you need to send it to email.
If you use:
var="$( ls / )";
echo -e "$var";
works but, you need to wait the script terminate to bufferize then print the output var;
With this way, you can use/work/print the output before the variable receive all the output content, then after it you can use the variable for anything else, like send email.
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