File: status-close.awk

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gawk 1%3A4.2.1%2Bdfsg-1
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BEGIN {
    cat  = "cat ; exit 3"
    print system("echo xxx | (cat ; exit 4)")

    print "YYY" | cat

    print close(cat)

    echo = "echo boo ; exit 5"
    echo | getline boo
    print "got", boo

    print close(echo)
}