File: vredir7.sub

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file content (23 lines) | stat: -rw-r--r-- 213 bytes parent folder | download | duplicates (2) 
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swizzle()
{
exec {fd[0]}<&0
exec {fd[1]}>&1

exec {stdin}<&${fd[0]}-
exec {stdout}>&${fd[1]}-
}

swizzle

echo $stdin $stdout

read line <&$stdin <<EOF
a
EOF

echo $line
echo $line >&$stdout

type swizzle

exit 0