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� | d 7} n | d k r� | j d � | d 7} n | d k r� | j d � | d 7} n t d d j | � � | f S( s� Return a (nt, rindex) tuple depending on the CPU times available
on this Linux kernel version which may be:
user, nice, system, idle, iowait, irq, softirq [steal, [guest, [guest_nice]]]
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c C s| t d d � } z | j � j � } Wd | j � Xt � \ } } | d | !} g | D] } t | � t ^ qV } | | � S( s� Return a named tuple representing the following system-wide
CPU times:
user, nice, system, idle, iowait, irq, softirq [steal, [guest, [guest_nice]]]
Last 3 fields may not be available on all Linux kernel versions.
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Fields are explained in 'man proc'; here is an updated (Apr 2012)
version: http://goo.gl/fmebo
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The kind parameter filters for connections that fit the following
criteria:
Kind Value Number of connections using
inet IPv4 and IPv6
inet4 IPv4
inet6 IPv6
tcp TCP
tcp4 TCP over IPv4
tcp6 TCP over IPv6
udp UDP
udp4 UDP over IPv4
udp6 UDP over IPv6
all the sum of all the possible families and protocols
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and convert it into a human readable form, like:
"0500000A:0016" -> ("10.0.0.5", 22)
"0000000000000000FFFF00000100007F:9E49" -> ("::ffff:127.0.0.1", 40521)
The IP address portion is a little or big endian four-byte
hexadecimal number; that is, the least significant byte is listed
first, so we need to reverse the order of the bytes to convert it
to an IP address.
The port is represented as a two-byte hexadecimal number.
Reference:
http://linuxdevcenter.com/pub/a/linux/2000/11/16/LinuxAdmin.html
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