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Shell Programming and Scripting

Script output as input for next command

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# 8  
Old 08-07-2013
Code:
man xargs

Code:
awk '/TEST IP/&&!/n\/a/{print $NF}' file |xargs ping -n 1

# 9  
Old 08-07-2013
Hi Guys
Thanks for your responses See below which is what I put together based on the feedback.. However its not working please can you advise what im doing wrong

Code:
spawn ssh "testuser\@****************"
expect -re "testuser@************* password:"
send "********\r";
expect -re "*********>"
log_file "log.txt" ;
send "show ******************** *******\r"
expect -re "************************"
log_file;
set MYIP=$(awk '/TEST IP/ && !/n\/a/ {print $2;exit}' file)
send "******** ******* ******* ****** *** $MYIP"

the MYIP bit should pickup an ip address from the show command output (output example below)

Code:
Idle Information:
    ******: 24580
    ******: 8468
    *******: n/a
    ***********: n/a
    ****************:
      ***************: 43:24:43
      TEST IP: 100.77.16.11

This then needs to run a command using the IP shown in the TEST IP from the text output.

The error i seem to get is

Code:
can't read "2": no such variable
    while executing
"set MYIP=$(awk '/TEST IP/ && !/n\/a/ {print $2;exit}' file)"
    (file "./Lookup" line 19)

Any Help you can offre would be much appreated
# 10  
Old 08-07-2013
Try change
set MYIP=$(awk '/TEST IP/ && !/n\/a/ {print $2;exit}' file)
to
MYIP=$(awk '/TEST IP/ && !/n\/a/ {print $2;exit}' file)
# 11  
Old 08-07-2013
Reply
Tried that mate and got the below.

Code:
can't read "2": no such variable
    while executing
"MYIP=$(awk '/TEST IP/ && !/n\/a/ {print $2;exit}' file)"
    (file "./lookup" line 19)

# 12  
Old 08-07-2013
Get rid of that double quotes which is causing variable replacement.

Also use $NF instead of $2 to get IP address:
Code:
"MYIP=$(awk '/TEST IP/ && !/n\/a/ {print $2;exit}' file)"

to
Code:
MYIP=$(awk '/TEST IP/ && !/n\/a/ {print $NF;exit}' file)

# 13  
Old 08-08-2013
Reply
Hi Yoda,
Tried that and got the below
Code:
can't read "NF": no such variable
    while executing
"MYIP=$(awk '/TEST IP/ && !/n\/a/ {print $NF;exit}' file)"
    (file "./sublookup" line 19)

# 14  
Old 08-08-2013
Post the complete script.
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