invalid argument in bash script when port is bad

Posted by user273689 on Super User See other posts from Super User or by user273689
Published on 2013-11-13T09:00:46Z Indexed on 2013/11/13 10:02 UTC
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linux

|

command-line

|

bash

When I do this command I get an error when there is something wrong with the eth3.

RESC="1234"

RESD="1234"

RESO="1234"

RESC=$(ssh -q vmx@$1 cat /sys/class/net/$2/carrier)

RESO=$(ssh -q vmx@$1 cat /sys/class/net/$2/operstate)

RESD=$(ssh -q vmx@$1 cat /sys/class/net/$2/dormant)

cat: /sys/class/net/eth3/carrier: Invalid argument

cat: /sys/class/net/eth3/dormant: Invalid argument

How can I use the invalid argument inside the RESC and RESD variable

Thanks

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