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Shell script to convert IP range csv into a list of single IP's

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# 1  
Old 02-10-2016
Shell script to convert IP range csv into a list of single IP's
Hi All,

I am looking for some help to convert a csv with IP ranges in.. in the format e.g.


Code:
1.1.1.2, 1.1.1.5
2.1.1.10, 2.1.1.20

and would be looking to output as follows:
Code:
1.1.1.2
1.1.1.3
1.1.1.4
1.1.1.5
2.1.1.10
2.1.1.11

etc etc up to 2.1.1.20

I have tried a few google things out but so far no luck... i have never done any shell scripting before...

Thanks
Last edited by Scrutinizer; 02-10-2016 at 02:23 PM.. Reason: code tags
# 2  
Old 02-10-2016
Hello zippyzip,

Please use code tags for commands/codes/Inputs you are using into your posts as per forum rules. Could you please try following and let me know if this helps.
Code:
awk -F", " '{m=split($1, A,".");n=split($2, B,".");num=A[m];till_num=B[n];Q=A[1]"."A[2]"."A[3];for(;num<=till_num;num++){print Q OFS num}}'  Input_file

Output will be as follows.
Code:
1.1.1 2
1.1.1 3
1.1.1 4
1.1.1 5
2.1.1 10
2.1.1 11
2.1.1 12
2.1.1 13
2.1.1 14
2.1.1 15
2.1.1 16
2.1.1 17
2.1.1 18
2.1.1 19
2.1.1 20

Thanks,
R. Singh
Last edited by RavinderSingh13; 02-10-2016 at 10:53 AM..
This User Gave Thanks to RavinderSingh13 For This Post:
zippyzip
# 3  
Old 02-10-2016
Thanks Ravinder gives me something to work with...
# 4  
Old 02-10-2016
Another awk:
Code:
awk '{for(i=$4; i<=$8; i++) print $1,$2,$3,i}' FS='[.]|, *' OFS=. file

Code:
1.1.1.2
1.1.1.3
1.1.1.4
1.1.1.5
2.1.1.10
2.1.1.11
2.1.1.12
2.1.1.13
2.1.1.14
2.1.1.15
2.1.1.16
2.1.1.17
2.1.1.18
2.1.1.19
2.1.1.20

# 5  
Old 02-10-2016
Given your IP range spans byte boundaries (like 10.1.1.251, 10.1.2.5), this might be of some interest:
Code:
while IFS=", " read IP1 IP2
  do    BIP1=$((0x$(printf "%02X" ${IP1//./ })));
        BIP2=$((0x$(printf "%02X" ${IP2//./ })));
        for ((I=BIP1; I<=BIP2; I++))
          do printf "%d.%d.%d.%d\n" $((I>>24)) $((I>>16&255)) $((I>>8&255)) $((I&255))
          done
  done < file
10.1.1.251
10.1.1.252
10.1.1.253
10.1.1.254
10.1.1.255
10.1.2.0
10.1.2.1
10.1.2.2
10.1.2.3
10.1.2.4
10.1.2.5

This User Gave Thanks to RudiC For This Post:
galford
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