awk

[we2aresame]

we can
cat filename | awk '{print $1}'
cat filename | awk '{print $2}'
...
how to

for i in 1 2 3
do
cat filename | awk '{print $i}'
done

The (print $i ) doesn't work, why? Thanks.

 

[vgersh99]

# depending what you're after.
# What ARE you after?
#
for i in 1 2 3
do
awk -v i=${i} '{print $i}' filename
done

vlad
+----------------------------+
| #include<disclaimer.h> |
+----------------------------+

 

[we2aresame]

why you know everything ?

 

[vgersh99]

... and how's that UNIX related?

vlad
+----------------------------+
| #include<disclaimer.h> |
+----------------------------+

 

[GouseBaig]

Hi

I tried the given solution , which is
for i in 1 2 3
do
awk -v i=${i} '{print $i}' filename
done
,But its not wokring for me.

Then i tried like this,
for i in 1 2 3
do
awk '{ print i }' i=$i filename
done
, In this way its working for me. WHY?

thanx
baig.

 

[vgersh99]

you probably have an older awk without the '-v' switching.

What OS are you one?
If on Solaris, try 'nawk' instead of 'awk' with the original code.

vlad
+----------------------------+
| #include<disclaimer.h> |
+----------------------------+

 

[PHV]

For all flavor of awk:

for i in 1 2 3
do
  awk '{print $'"$i"'}' filename
done

Hope This Help
PH.

 

[GouseBaig]

Hi vlad/PH

Sorry I took a long time to check this program.

Well, my OS informations are
SunOS 5.6 Generic_105181-28 sun4u sparc SUNW,Ultra-Enterprise

It has both awk and nawk.

As you said(vlad), i tried using nawk, its working fine only after i removed the &quot;$&quot; symbol i.e instead of &quot;print $i&quot; used &quot;print i&quot; .

I tried the &quot;print $'&quot;$i&quot;'}&quot; also, but it seems to be having the same problem.

I am not sure whethere this awk is updated one or not.

thanx
baig.