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Full Discussion: awk- comparing fields from the same column, finding discontinuities.
Top Forums Shell Programming and Scripting awk- comparing fields from the same column, finding discontinuities. Post 302515120 by |UVI| on Tuesday 19th of April 2011 06:09:10 AM
Old 04-19-2011
Code:
cat input.txt | awk 'BEGIN{ 
  while (getline  > 0 && NF > 0){
      data_array[$1]+=0
      if ( NR > 1 ){
        C1 = $1 
        C2 = $2

        if ( P1 == C1 && P2 != C2){
            if ( (P2+1)%16 != C2 ){
              data_array[$1]++
            }
        }
      }
      P1 = $1
      P2 = $2
  }
}

END{
  for (var in data_array)
    if ( data_array[var] == 1)
      print "Channel " var " : "  data_array[var] " discontinuity"
    else
      print "Channel " var " : "  data_array[var] " discontinuities"
}'

there was an error on assignement!
Now works correctly
This User Gave Thanks to |UVI| For This Post:
acsg
 

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snnewgroup.v0.3.8(8)					      System Manager's Manual					      snnewgroup.v0.3.8(8)

NAME

       snnewgroup - create a new sn newsgroup

SYNOPSIS

       snnewgroup newsgroup [server] [port]

DESCRIPTION

       snnewgroup creates newsgroup assigning it an upstream NNTP server of server:port.  If port is not specified, defaults to 119.  If server is
       also not specified, newsgroup is created as a local group which is fed only by articles POSTed to it.

       You will need to be root or own /var/spool/sn in order to add new groups.

ENVIRONMENT VARIABLES

       SNROOT If this is set and is not empty, the value is used in place of /var/spool/sn, the default news spool directory.

FILES CREATED

       /var/spool/sn/newsgroup
	      Directory where articles will be stored.

       /var/spool/sn/newsgroup/.created
	      Empty file for the newsgroup creation time.

       /var/spool/sn/newsgroup/.serial
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       /var/spool/sn/newsgroup/.outgoing
	      If server is specified, is a symlink to  /var/spool/sn/.outgoing/server:port, which is a directory, created if it does  not  already
	      exist.  If server is not specified, no file /var/spool/sn/newsgroup/.outgoing will be created.  See also snsend.

SEE ALSO

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