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Full Discussion: largest field , awk , help
Top Forums Shell Programming and Scripting largest field , awk , help Post 302175709 by yunccll on Saturday 15th of March 2008 06:44:18 AM
Old 03-15-2008
try this code:
Code:
#!/bin/bash

#constant
INFILE="max.txt"

#core script
awk ' BEGIN { OFS=FS=":"; cur=max=0; seen=""}
        {
           cur = length($1)
           if(cur > max ){
              seen = $1 " " $0
           }
           else if(cur == max){
              seen = seen "\n"  $1 " " $0
           }
        }
        END { print seen }'  $INFILE
#exit normally
exit 0

.Aaron
 

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LEARN ABOUT SUNOS

mlib_vectormaximummag_f32c

mlib_VectorMaximumMag_U8C(3MLIB)			    mediaLib Library Functions				  mlib_VectorMaximumMag_U8C(3MLIB)

NAME

       mlib_VectorMaximumMag_U8C,  mlib_VectorMaximumMag_S8C,  mlib_VectorMaximumMag_S16C, mlib_VectorMaximumMag_S32C, mlib_VectorMaximumMag_F32C,
       mlib_VectorMaximumMag_D64C - find the first element with the maximum magnitude in a vector

SYNOPSIS

       cc [ flag... ] file... -lmlib [ library... ]
       #include <mlib.h>

       mlib_status mlib_VectorMaximumMag_U8C(mlib_u8 *max, const mlib_u8 *x, mlib_s32 n);

       mlib_status mlib_VectorMaximumMag_S8C(mlib_s8 *max, const mlib_s8 *x, mlib_s32 n);

       mlib_status mlib_VectorMaximumMag_S16C(mlib_s16 *max, const mlib_s16 *x, mlib_s32 n);

       mlib_status mlib_VectorMaximumMag_S32C(mlib_s32 *max, const mlib_s32 *x, mlib_s32 n);

       mlib_status mlib_VectorMaximumMag_F32C(mlib_f32 *max, const mlib_f32 *x, mlib_s32 n);

       mlib_status mlib_VectorMaximumMag_D64C(mlib_d64 *max, const mlib_d64 *x, mlib_s32 n);

DESCRIPTION

       Each of these functions finds the first element with the maximum magnitude in a complex vector, then puts the real and imaginary  parts	of
       it into max[0] and max[1], respectively.

PARAMETERS

       Each of the functions takes the following arguments:

       max	       Pointer to the first element with the maximum magnitude.

       x	       Pointer to the first element of the source vector.

       n	       Number of elements in the source vector.

RETURN VALUES

       Each of the functions returns MLIB_SUCCESS if successful. Otherwise it returns MLIB_FAILURE.

ATTRIBUTES

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

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Evolving			   |
       +-----------------------------+-----------------------------+
       |MT-Level		     |MT-Safe			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       mlib_VectorMinimumMag_U8C(3MLIB), mlib_MatrixMaximumMag_U8C(3MLIB), mlib_MatrixMinimumMag_U8C(3MLIB), attributes(5)

SunOS 5.10							    9 Nov 2004					  mlib_VectorMaximumMag_U8C(3MLIB)
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