topic Re: AWK in Operating System - Linux

AWK

Karthick K S — Tue, 27 Sep 2005 01:13:46 GMT

How to assign awk value in some Variable for example
awk NR==1 { print substr($0,33,3); } ${MQUTIL}/abc.snf

for above output value will go to some variable

Re: AWK

RAC_1 — Tue, 27 Sep 2005 01:19:06 GMT

awk -v "var=value" '{your code}'

Re: AWK

Muthukumar_5 — Tue, 27 Sep 2005 01:21:24 GMT

You can use awk -v var="value"

# echo "hi" | awk -v var=bye '{ print $0" "var }'
hi bye
# Another way as after awk using variable
# echo "hi" | awk '{ print $0" "var }' var=bye
hi bye

hth.

Re: AWK

VEL_1 — Tue, 27 Sep 2005 01:21:35 GMT

You want store the ouput of awk to Variable or want use variable in awk?

you can use BEGIN block or use awk option:

awk --assign var=val

eg:

$ echo | gawk -v var=200 'BEGIN { var = var + 100 }; END { print var }'
300

Re: AWK

Karthick K S — Tue, 27 Sep 2005 01:21:45 GMT

What My question is

Var = 'awk NR==1 { print substr($0,33,3); } ${MQUTIL}/abc.snf'

echo $VAR
output is not coming

Re: AWK

Arunvijai_4 — Tue, 27 Sep 2005 01:22:03 GMT

As per # man awk says,

-v var=value Cause var=value assignment to occur before the BEGIN action (if it exists) is executed.

Arun

Re: AWK

Karthick K S — Tue, 27 Sep 2005 01:23:29 GMT

Raj,

I want to store output of awk in some variable

Re: AWK

VEL_1 — Tue, 27 Sep 2005 01:25:16 GMT

Its case sensitive.

var=`awk NR==1 { print substr($0,33,3); } ${MQUTIL}/abc.snf`

echo $var

Re: AWK

Muthukumar_5 — Tue, 27 Sep 2005 01:25:17 GMT

Sorry. Do you want to store the return contents or return value of awk NR==1 { print substr($0,33,3); } ${MQUTIL}/abc.snf command execution.?

# Return String or Content
retstr=$(awk NR==1 { print substr($0,33,3); } ${MQUTIL}/abc.snf)

# Return Value of execution
awk NR==1 { print substr($0,33,3); } ${MQUTIL}/abc.snf
ret=$?
echo "Return value is ${ret}"

hth.

Re: AWK

Arunvijai_4 — Tue, 27 Sep 2005 01:26:50 GMT

Var = `awk NR==1 { print substr($0,33,3); } ${MQUTIL}/abc.snf`

echo $Var

-Arun

Re: AWK

Karthick K S — Tue, 27 Sep 2005 01:40:15 GMT

THanks all,

Now i got it.