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Full Discussion: Remove lines that are subsets of other lines in File
Top Forums Shell Programming and Scripting Remove lines that are subsets of other lines in File Post 302941908 by Chubler_XL on Wednesday 22nd of April 2015 04:47:24 PM
Old 04-22-2015
This solution keeps the lines with most IPs first although not optimal it should give fairly more concise answers than just processing file top to bottom.

I tried it on a data files with 170K lines and it took approx 3 seconds to process.

Code:
awk '
function have(ln,ip,num) {
  ret=1
  num=split(ln,ips)
  for(ip=1;ip<=num;ip++)
     if(!(ips[ip] in havelist)) {
         havelist[ips[ip]]
         unique++
         ret=0
      }
  return ret
}
{ L[NR]=$0;D[NF]=D[NF] " " NR; max=NF>max?NF:max }
END {
   for(c=max;c;c--)
      if(D[c]) {
         lns=split(D[c],v)
         for(i=1;i<=lns;i++)
           if(!have(L[v[i]])) print L[v[i]]
      }
   printf "Data file contains %'\''d unique IPs\n", unique > "/dev/stderr"
}' infile


For anyone who wants to test possible solutions I used the script to make my test file:

Code:
for ((i=0;i<170000;i++))
do
    printf "10.0.%d.%d" $((RANDOM%256)) $((RANDOM%256))
    ips=$((RANDOM%8))
    while ((--ips > 0))
    do
       printf " 10.0.%d.%d" $((RANDOM%256)) $((RANDOM%256))
    done
    printf "\n"
done

Last edited by Chubler_XL; 04-22-2015 at 05:53 PM..
 

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LEARN ABOUT CENTOS

report-cli

REPORT-CLI(1)							 LIBREPORT MANUAL						     REPORT-CLI(1)

NAME

       report-cli - Work with ABRT problem directories from command line.

SYNOPSIS

       report-cli [-vsp] -L[PREFIX] [PROBLEM_DIR]

       report-cli [-vsp] -e EVENT PROBLEM_DIR

       report-cli [-vsp] -a[y] PROBLEM_DIR

       report-cli [-vsp] -c[y] PROBLEM_DIR

       report-cli [-vsp] -r[y|o|d] PROBLEM_DIR

DESCRIPTION

       report-cli is a command line tool that manages application crashes and other problems caught by abrtd daemon, or created by other programs
       using libreport. It enables access to, manipulation of problem data, and reporting.

OPTIONS

       -L[PREFIX]
	   List possible events [which start with PREFIX]

       -e EVENT
	   Run EVENT on PROBLEM_DIR

       -a, --analyze
	   Run analyze event(s) on PROBLEM_DIR

       -c, --collect
	   Run collect event(s) on PROBLEM_DIR

       -r, --report
	   Analyze, collect and report problem data in PROBLEM_DIR

       -d, --delete
	   Remove PROBLEM_DIR after reporting

       -y, --always
	   Noninteractive: don't ask questions, assume positive answer to all of them

       -o, --report-only
	   With -r: do not run analyzers, run only reporters

       -v, --verbose
	   Be verbose

       -s
	   Log to syslog

       -p
	   Add program names to log

       -V, --version
	   Display version and exit

AUTHORS

       o   ABRT team

LIBREPORT 2.1.11						    06/18/2014							     REPORT-CLI(1)
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