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Full Discussion: advanced awk
Top Forums Shell Programming and Scripting advanced awk Post 302409253 by wakatana on Wednesday 31st of March 2010 01:15:25 PM
Old 03-31-2010
advanced awk
Hi all

Input
Code:
group1	user1
	user2
	user3
group2	user4
	user5
	user1
group3	user6
	user7
	user8

Desired output
Code:
group1
group2

So far I've tried, but did not work
Code:
BEGIN
{
  i=0;                                  # declaring variable
}

{
  if (NF==2){currgrp=$1;}               # check whether awk actually processing 2 column record, if yes save the group name
  else
     {
      if ($1~/uname/)                   # else if awk is processing 1 column record and is found user name, save the group name to array and increment i
       {
         netgroups[i]=currgrp;
         i++;
       }
     }
}

END                                     # at the end of processing whole file print the array (all saved groups)
{
  for(j=0;j<i;j++)
  {
    print netgroups[i];
  }
}

skript was called
Code:
awk -v uname="user1" -f awkscript.awk group_file

what is wrong with script above ?
 

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LEARN ABOUT DEBIAN

smpteframe

SMPTEFrame(3)							    libltcsmpte 						     SMPTEFrame(3)

NAME

       SMPTEFrame -

       Raw 80 bit SMPTE frame.

SYNOPSIS

       #include <ltcsmpte.h>

   Data Fields
       unsigned int frameUnits:4
       unsigned int user1:4
       unsigned int frameTens:2
       unsigned int dfbit:1
       unsigned int colFrm:1
       unsigned int user2:4
       unsigned int secsUnits:4
       unsigned int user3:4
       unsigned int secsTens:3
       unsigned int biphaseMarkPhaseCorrection:1
       unsigned int user4:4
       unsigned int minsUnits:4
       unsigned int user5:4
       unsigned int minsTens:3
       unsigned int binaryGroupFlagBit1:1
       unsigned int user6:4
       unsigned int hoursUnits:4
       unsigned int user7:4
       unsigned int hoursTens:2
       unsigned int reserved:1
       unsigned int binaryGroupFlagBit2:1
       unsigned int user8:4
       unsigned int syncWord:16

Detailed Description
       Raw 80 bit SMPTE frame.

       Definition at line 140 of file ltcsmpte.h.

Field Documentation
   unsigned int SMPTEFrame::binaryGroupFlagBit1
       Definition at line 160 of file ltcsmpte.h.

   unsigned int SMPTEFrame::binaryGroupFlagBit2
       Definition at line 168 of file ltcsmpte.h.

   unsigned int SMPTEFrame::biphaseMarkPhaseCorrection
       Definition at line 153 of file ltcsmpte.h.

   unsigned int SMPTEFrame::colFrm
       Definition at line 146 of file ltcsmpte.h.

   unsigned int SMPTEFrame::dfbit
       Examples:
	   tests/decoder.c.

       Definition at line 145 of file ltcsmpte.h.

   unsigned int SMPTEFrame::frameTens
       Definition at line 144 of file ltcsmpte.h.

   unsigned int SMPTEFrame::frameUnits
       Definition at line 141 of file ltcsmpte.h.

   unsigned int SMPTEFrame::hoursTens
       Definition at line 166 of file ltcsmpte.h.

   unsigned int SMPTEFrame::hoursUnits
       Definition at line 163 of file ltcsmpte.h.

   unsigned int SMPTEFrame::minsTens
       Definition at line 159 of file ltcsmpte.h.

   unsigned int SMPTEFrame::minsUnits
       Definition at line 156 of file ltcsmpte.h.

   unsigned int SMPTEFrame::reserved
       Definition at line 167 of file ltcsmpte.h.

   unsigned int SMPTEFrame::secsTens
       Definition at line 152 of file ltcsmpte.h.

   unsigned int SMPTEFrame::secsUnits
       Definition at line 149 of file ltcsmpte.h.

   unsigned int SMPTEFrame::syncWord
       Definition at line 171 of file ltcsmpte.h.

   unsigned int SMPTEFrame::user1
       Definition at line 142 of file ltcsmpte.h.

   unsigned int SMPTEFrame::user2
       Definition at line 147 of file ltcsmpte.h.

   unsigned int SMPTEFrame::user3
       Definition at line 150 of file ltcsmpte.h.

   unsigned int SMPTEFrame::user4
       Definition at line 154 of file ltcsmpte.h.

   unsigned int SMPTEFrame::user5
       Definition at line 157 of file ltcsmpte.h.

   unsigned int SMPTEFrame::user6
       Definition at line 161 of file ltcsmpte.h.

   unsigned int SMPTEFrame::user7
       Definition at line 164 of file ltcsmpte.h.

   unsigned int SMPTEFrame::user8
       Definition at line 169 of file ltcsmpte.h.

Author
       Generated automatically by Doxygen for libltcsmpte from the source code.

Version 0.4.4							  Fri Apr 27 2012						     SMPTEFrame(3)
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