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sync 03-06-2010 07:47 AM

Define an alias with an embeded awk command error ?
 
Hi, guys:
**
** I'm trying to define an alias in .cshrc* with the embeded awk command, like this :

alias checketh0* "ip add ls eth0 |awk '/inet/{print $2}' |sed -n '1p' "


Then i run "source ~/.cshrc" and run "checketh0" command in the terminal ,
but the result is the following :

** " inet 192.168.18.18/24 brd 192.168.18.255 scope global eth0"


but i want* this result :
192.168.18.18/24
*



How do I do it ? Any help will be highly appreciated.


Thanks for you help ~

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Alexander Dalloz 03-06-2010 11:34 AM

Define an alias with an embeded awk command error ?
 
Am 06.03.2010 09:47, schrieb sync:
> Hi, guys:
>
> I'm trying to define an alias in .cshrc with the embeded awk command,
> like this :
>
> alias checketh0 "ip add ls eth0 |awk '/inet/{print $2}' |sed -n '1p' "
>
> Then i run "source ~/.cshrc" and run "checketh0" command in the terminal ,
> but the result is the following :
>
> " inet 192.168.18.18/24 brd 192.168.18.255 scope global eth0"
>
> but i want this result :
> 192.168.18.18/24
>
>
> How do I do it ? Any help will be highly appreciated.
>
>
> Thanks for you help ~

Within your awk statement the "$2" is eaten and thus awk prints the
whole line.

You can bypass this using following in your .cshrc

set eth0=`/sbin/ip addr ls eth0 | awk '/inet/ { print $2; exit }'`
alias checketh0 "echo $eth0"

Alexander
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