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Full Discussion: awk Help
Top Forums UNIX for Dummies Questions & Answers awk Help Post 302148728 by findprakash on Monday 3rd of December 2007 11:52:16 AM
Old 12-03-2007
awk Help
Hi,
I am generating print column in awk using a while loop. I want to get
{'print `echo "$"$count`'}` in the code to be evaluated as below :

for nodecount =4 {'print `echo "$"$count`'}` should be {'print $4'}
for nodecount =5 {'print `echo "$"$count`'}` should be {'print $5'}
for nodecount =6 {'print `echo "$"$count`'}` should be {'print $6'}

Any help would be greatly appreciated.

Code below:

# more nodetest
set -xv

NODES=4
count=3
nodecount=0

while [ ${nodecount} != ${NODES} ]
do
count=`expr $count + 1`
nodecount=`expr $nodecount + 1`

HOST_NAME=`cat /var/opt/oracle/filename|grep -w oracle|awk -F: {'print `echo "$"$count`'}`
echo $HOST_NAME

done

# more /var/opt/oracle/filename
oracle:/pgoracle/app/oracle:4:HOST1:HOST2:HOST3:HOST4
 

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LEARN ABOUT SUNOS

print

print(1)							   User Commands							  print(1)

NAME

       print - shell built-in function to output characters to the screen or window

SYNOPSIS

   ksh
       print [ -Rnprsu [n]] [arg...]

DESCRIPTION

   ksh
       The shell output mechanism. With no flags or with flag - or -, the arguments are printed on standard output as described by echo(1).

OPTIONS

       The following options are supported:

       -n	       suppresses new-line from being added to the output.

       -R

       -r	       (raw  mode) ignore the escape conventions of echo. The -R option will print all subsequent arguments and options other than
		       -n.

       -p	       causes the arguments to be written onto the pipe of the process spawned with |& instead of standard output.

       -s	       causes the arguments to be written onto the history file instead of standard output.

       -u [ n ]        flag can be used to specify a one digit file descriptor unit number n on which the output will be placed. The default is 1.

EXIT STATUS

       The following exit values are returned:

       0	Successful operation.

       >0	Output file is not open for writing.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWcsu			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       echo(1), ksh(1), attributes(5)

SunOS 5.10							    15 Apr 1994 							  print(1)
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