Check group consistencies Post: 302931509

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Top Forums UNIX for Dummies Questions & Answers Check group consistencies Post 302931509 by MadeInGermany on Tuesday 13th of January 2015 01:59:53 PM

01-13-2015

Registered User

Yes, Scrutinizer's script works with unsorted data.
Yes, this section prints the 1st line then jumps to the next line.
The script takes lots of memory that is processed in the END section, after reading the whole file.
Senhias script reads the file twice that takes time, but maybe takes less memory.

---------- Post updated at 01:14 PM ---------- Previous update was at 12:24 PM ----------

The following is a little improvement regarding memory consumption and speed:

Code:

awk '
{
  i=$1 FS $2
  if (i in A) {
    if (!((i,$4) in B)) {A[i]=""}
  } else {
    A[i]=$0
    B[i,$4]; B[i,substr($4,2,1) substr($4,1,1)]
  }
}
END {for (i in A) if (A[i]!="") print A[i]}
' file

Doesn't need a sorted file.

---------- Post updated at 01:59 PM ---------- Previous update was at 01:14 PM ----------

The following uses minimum memory but is a little slower:

Code:

awk '
{
  i=$1 FS $2
  if (i in A) {
    if (B[i]!=$4 && B[i]!=substr($4,2) substr($4,1,1)) A[i]=""
  } else {
    A[i]=$3
    B[i]=$4
  }
}
END {for (i in A) if (A[i]!="") print i,A[i],B[i]}
' file

Last edited by MadeInGermany; 01-13-2015 at 02:20 PM..

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LEARN ABOUT MINIX

scsi_free_consistent_buf

scsi_free_consistent_buf(9F)				   Kernel Functions for Drivers 			      scsi_free_consistent_buf(9F)

NAME

       scsi_free_consistent_buf - free a previously allocated SCSI DMA I/O buffer

SYNOPSIS

       #include <sys/scsi/scsi.h>

       void scsi_free_consistent_buf(struct buf *bp);

INTERFACE LEVEL

       Solaris DDI specific (Solaris DDI).

PARAMETERS

       bp	Pointer to the	buf(9S) structure.

DESCRIPTION

       scsi_free_consistent_buf()  frees  a  buffer  header  and  consistent  data  buffer  that was previously allocated using scsi_alloc_consis-
       tent_buf(9F).

CONTEXT

       scsi_free_consistent_buf() may be called from either the user or the interrupt levels.

SEE ALSO

       freerbuf(9F), scsi_alloc_consistent_buf(9F), buf(9S)

       Writing Device Drivers

WARNING

       scsi_free_consistent_buf() will call  freerbuf(9F) to free the
	buf(9S) that was allocated before or during the call to  scsi_alloc_consistent_buf(9F).

       If consistent memory is bound to a scsi_pkt(9S), the pkt should be destroyed before freeing the consistent memory.

SunOS 5.10							    20 Jul 1998 				      scsi_free_consistent_buf(9F)

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