How to bring down all internet devices except the specified one?

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1
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I'm looking for a way to bring down all other devices except the given one.

I think it would be along the lines of greping the ifconfig output to then pull all the device names except the specified one and then use those names as input to an ifconfig $DEV down command.

I just need a little help piecing it together.

Thanks!

asked Nov 27 '17 at 15:31

lukemk1

226

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up vote
1
down vote

favorite

I'm looking for a way to bring down all other devices except the given one.

I think it would be along the lines of greping the ifconfig output to then pull all the device names except the specified one and then use those names as input to an ifconfig $DEV down command.

I just need a little help piecing it together.

Thanks!

asked Nov 27 '17 at 15:31

lukemk1

226

add a commentÂ |Â

up vote
1
down vote

favorite

I'm looking for a way to bring down all other devices except the given one.

I think it would be along the lines of greping the ifconfig output to then pull all the device names except the specified one and then use those names as input to an ifconfig $DEV down command.

I just need a little help piecing it together.

Thanks!

asked Nov 27 '17 at 15:31

lukemk1

226

I'm looking for a way to bring down all other devices except the given one.

I think it would be along the lines of greping the ifconfig output to then pull all the device names except the specified one and then use those names as input to an ifconfig $DEV down command.

I just need a little help piecing it together.

Thanks!

asked Nov 27 '17 at 15:31

lukemk1

226

asked Nov 27 '17 at 15:31

lukemk1

226

asked Nov 27 '17 at 15:31

lukemk1

226

asked Nov 27 '17 at 15:31

lukemk1

226

add a commentÂ |Â

1 Answer
1

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oldest

votes

up vote
2
down vote

accepted

The ifconfig is deprecated, use ip instead.

You can use this simple script:

#!/bin/bash

if [ -z "$1" ]
then
 echo "Device parameter missing!"
 exit 1
fi

devices=`ip a | grep UP | cut -d " " -f2 | tr -d ":" | grep -v "lo" | grep -v "$1"`

for dev in $devices
do 
 ifdown $dev
done

It is called as:

./script.sh <device>

For example with eth0:

./script.sh eth0

If called without parameter, reports Device parameter missing!.

answered Nov 27 '17 at 17:59

Jaroslav Kucera

4,3604621

1

This worked perfectly! Thank you.
â€“Â lukemk1
Nov 27 '17 at 22:22

add a commentÂ |Â

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1 Answer
1

active

oldest

votes

1 Answer
1

active

oldest

votes

up vote
2
down vote

accepted

The ifconfig is deprecated, use ip instead.

You can use this simple script:

#!/bin/bash

if [ -z "$1" ]
then
 echo "Device parameter missing!"
 exit 1
fi

devices=`ip a | grep UP | cut -d " " -f2 | tr -d ":" | grep -v "lo" | grep -v "$1"`

for dev in $devices
do 
 ifdown $dev
done

It is called as:

./script.sh <device>

For example with eth0:

./script.sh eth0

If called without parameter, reports Device parameter missing!.

answered Nov 27 '17 at 17:59

Jaroslav Kucera

4,3604621

1

This worked perfectly! Thank you.
â€“Â lukemk1
Nov 27 '17 at 22:22

add a commentÂ |Â

up vote
2
down vote

accepted

The ifconfig is deprecated, use ip instead.

You can use this simple script:

#!/bin/bash

if [ -z "$1" ]
then
 echo "Device parameter missing!"
 exit 1
fi

devices=`ip a | grep UP | cut -d " " -f2 | tr -d ":" | grep -v "lo" | grep -v "$1"`

for dev in $devices
do 
 ifdown $dev
done

It is called as:

./script.sh <device>

For example with eth0:

./script.sh eth0

If called without parameter, reports Device parameter missing!.

answered Nov 27 '17 at 17:59

Jaroslav Kucera

4,3604621

1

This worked perfectly! Thank you.
â€“Â lukemk1
Nov 27 '17 at 22:22

add a commentÂ |Â

up vote
2
down vote

accepted

The ifconfig is deprecated, use ip instead.

You can use this simple script:

#!/bin/bash

if [ -z "$1" ]
then
 echo "Device parameter missing!"
 exit 1
fi

devices=`ip a | grep UP | cut -d " " -f2 | tr -d ":" | grep -v "lo" | grep -v "$1"`

for dev in $devices
do 
 ifdown $dev
done

It is called as:

./script.sh <device>

For example with eth0:

./script.sh eth0

If called without parameter, reports Device parameter missing!.

answered Nov 27 '17 at 17:59

Jaroslav Kucera

4,3604621

The ifconfig is deprecated, use ip instead.

You can use this simple script:

#!/bin/bash

if [ -z "$1" ]
then
 echo "Device parameter missing!"
 exit 1
fi

devices=`ip a | grep UP | cut -d " " -f2 | tr -d ":" | grep -v "lo" | grep -v "$1"`

for dev in $devices
do 
 ifdown $dev
done

It is called as:

./script.sh <device>

For example with eth0:

./script.sh eth0

If called without parameter, reports Device parameter missing!.

answered Nov 27 '17 at 17:59

Jaroslav Kucera

4,3604621

answered Nov 27 '17 at 17:59

Jaroslav Kucera

4,3604621

answered Nov 27 '17 at 17:59

Jaroslav Kucera

4,3604621

answered Nov 27 '17 at 17:59

Jaroslav Kucera

4,3604621

1

This worked perfectly! Thank you.
â€“Â lukemk1
Nov 27 '17 at 22:22

add a commentÂ |Â

1

This worked perfectly! Thank you.
â€“Â lukemk1
Nov 27 '17 at 22:22

This worked perfectly! Thank you.
â€“Â lukemk1
Nov 27 '17 at 22:22

add a commentÂ |Â

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