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Full Discussion: Question on awk for finding the column number using a match word
Top Forums Shell Programming and Scripting Question on awk for finding the column number using a match word Post 302451131 by mallak on Sunday 5th of September 2010 10:32:08 PM
Old 09-05-2010
Quote:
Originally Posted by agama
Using the syntax $(i) will allow you to access a column using the contents of a variable, in this case 'i'.

Code:
#!/usr/bin/env ksh
awk -v col=${1:-1} ' {print $(col)}'

This example accepts a column number from the command line and prints just that column from stdin. If no column number is given, it defaults to the first column.
Thanks for the quick reply

Code:
awk '{$5="applysever=" NR;gsub(/_/,"",$6);print $1,$5,$6,"stop"}' infile

That was the problem for Me i cannot say $5 to applyserver, becoz it can be any where.

My awk command shuld search where applyserver is and return me the value of the column

---------- Post updated at 09:32 PM ---------- Previous update was at 09:28 PM ----------
Quote:
Originally Posted by agama
Using the syntax $(i) will allow you to access a column using the contents of a variable, in this case 'i'.

Code:
#!/usr/bin/env ksh
awk -v col=${1:-1} ' {print $(col)}'

This example accepts a column number from the command line and prints just that column from stdin. If no column number is given, it defaults to the first column.
Thanks for response

My Requirement is that AWK program should search "applyserver" string in the line's and return me the column number.so that i can use the column number to use and print that column number

I cannot pass the value from command line..
Last edited by Scott; 09-10-2010 at 01:55 PM.. Reason: Added code tags
 

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LEARN ABOUT PHP

db2_field_width

DB2_FIELD_WIDTH(3)							 1							DB2_FIELD_WIDTH(3)

db2_field_width - Returns the width of the current value of the indicated column in a result set

SYNOPSIS

       int db2_field_width (resource  $stmt, mixed  $column)

DESCRIPTION

	Returns the width of the current value of the indicated column in a result set. This is the maximum width of the column for a fixed-length
       data type, or the actual width of the column for a variable-length data type.

PARAMETERS

	      o $stmt
		- Specifies a statement resource containing a result set.

	      o $column
		- Specifies the column in the result set. This can either be an integer representing the 0-indexed position of the  column,  or  a
		string containing the name of the column.

RETURN VALUES

	Returns  an  integer  containing  the width of the specified character or binary data type column in a result set. If the specified column
       does not exist in the result set, db2_field_width(3) returns FALSE.

SEE ALSO

       db2_field_display_size(3), db2_field_name(3), db2_field_num(3), db2_field_precision(3), db2_field_scale(3), db2_field_type(3).

PHP Documentation Group 													DB2_FIELD_WIDTH(3)
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