On Sun, Aug 23, 2020 at 3:23 AM ToddAndMargo via users
<users@xxxxxxxxxxxxxxxxxxxxxxx> wrote:
> On 2020-08-22 02:53, Tom H wrote:
>> 1) Why do you use "$InetDev" in GetIP and "eno2 in GetGW and
>> UpDownedEthernetDevices?
>
> Because I screwed up. Good catch. If $INetDev had changed,
> I would have had some troubleshooting to do! I fixed.
:)
>> 2) Why do you use "-i" for grep in GetIP?
>
> "-i" is case insensitive. Do do it out of habit. Makes
> so I don't have to constantly wonder about the case.
>
> I use the method ".lc" in Raku (Perl 6) all the time for
> the same reason. I just don't trust the case.
>
> When I am careening through web pages, I often
> find the web developer will change case on me at
> times. So I plan for him.
>> 3) Why do you use "sed -n 1,1p" in GetGW?
>
> Because I only wanted the first line. Sometimes
> with that commend you get two lines back. I am
> covering all my bases.
In the unlikely event that you have two UGs on eno2, you must want both, no?
>> 4) Why do you use "route" in GetGW when you're using "ip" elsewhere
>> and "net-tools" isn't installed by default?
>
> I like to mixed up all the different way of doing things.
> Sort of like showing alternate examples as I go
>> Use of awk
>>
>> 1) "grep search | awk {...}" is the same as "awk '/search/ {...}"
>>
>> 2) "grep search1 | grep search2 | awk {...}" is the same as "awk
>> '/search1/ && /search2/ {...}"
>
> I have a cheat sheet of awk examples. I tend to use what I remember
> first though. I should learn the "search" property
> and stick it in the sheet. Problem is that I am migrating
> away from bash and into Raku (Perl 6) as I have a bazillion
> times more power in Raku. And Raku is just plain fun to
> program in.
>
> I should post these things here more often. You are a great
> second pair of eyes!
:)
> Here is my latest:
>
> This is from another program. I find it almost impossible
> to find my gateway if the device is down. In the program,
> all the devices need to be up anyway, so I up anyone that
> is down. I use both "device" and "connection" as I
> find that if cone does not work, the other will. I also
> "down" first as sometimes I have found "up" error out
> on me if I don't first down. So, I am covering my bases.
>
> function UpDownedEthernetDevices () {
>
> local State=""
> local LinkState=""
>
> for Line in $(nmcli device | grep ethernet | awk '{print $1}'); do
> State="$(nmcli device | grep $Line | awk '{print $3}')"
> LinkState="$(ip address | grep eno2 | awk -F "," '{print $3}')"
> # echo "Line = <$Line> State = <$State> LinkState =
> <$LinkState>')" > "/dev/tty"
>
> if [ "$State" == "disconnected" ]; then
> echo "Reconnecting $Line" > "/dev/tty"
> /usr/bin/nmcli device disconnect $Line
> /usr/bin/nmcli device connect $Line
> /usr/bin/nmcli connection down $Line
> /usr/bin/nmcli connection up $Line
>
> elif [[ $LinkState == "DOWN" ]]; then
> echo "Reattaching (link) $Line" > "/dev/tty"
> beesu "ip link set $Line down; ip link set $Line up;"
>
> echo "Reconnecting $Line" > "/dev/tty"
> /usr/bin/nmcli connection down $Line
> /usr/bin/nmcli connection up $Line
> fi
> done
> }
You're using eno2 rather than a variable.
Why do you need "beesu" for "ip" and not for "nmcli"?
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