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Can't find the mistake in sed expression

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#1 (permalink)

02-16-2009

chebarbudo chebarbudo is offline

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Join Date: Nov 2008

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Posts: 188

Can't find the mistake in sed expression

Hi there,
Can anyone help me find the correct expression for sed.
I want to repace iface eth0 inet wathever
with iface eth0 inet static

Quote:

deneb:~# sed '/^iface eth0 inet (.*)/ s/\1/static/' /etc/network/interfaces
sed: -e expression #1, char 36: Invalid back reference
deneb:~# sed -r '/^iface eth0 inet (.*)/ s/\1/static/' /etc/network/interfaces
sed: -e expression #1, char 36: Invalid back reference
deneb:~# sed '/^iface eth0 inet \(.*\)/ s/\1/static/' /etc/network/interfaces
sed: -e expression #1, char 38: Invalid back reference
deneb:~# sed -r '/^iface eth0 inet \(.*\)/ s/\1/static/' /etc/network/interfaces
sed: -e expression #1, char 38: Invalid back reference

Thanks for your help
Santiago

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