Print only what is exclusive to a file compared to another in Bash
Clash Royale CLAN TAG#URR8PPP
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Good day everyone,
I know there are a lot of similar questions already answered, but I can't find a satisfying answer and it drives me nuts.
I have two files which both contain hostnames : one that holds all the ones opened to the Internet, the other logs all the scan results of ALL our hosts, opened to Internet or not.
File A (1111.com,1112.com,www.1113.com,1114.com)
File B (1111.com,1199.com,1299.com,www2.1329.com)
My goal is to print a file that would print ONLY the hosts that are exclusively in file B. I tried diff and comm but I cannot presort the files, as the entries a sometimes a little bit different.
Does anyone have a solution ?
files diff comm
asked Jul 12 at 12:36
Alistair Wallace
204
add a comment |Â
up vote
0
down vote
favorite
Good day everyone,
I know there are a lot of similar questions already answered, but I can't find a satisfying answer and it drives me nuts.
I have two files which both contain hostnames : one that holds all the ones opened to the Internet, the other logs all the scan results of ALL our hosts, opened to Internet or not.
File A (1111.com,1112.com,www.1113.com,1114.com)
File B (1111.com,1199.com,1299.com,www2.1329.com)
My goal is to print a file that would print ONLY the hosts that are exclusively in file B. I tried diff and comm but I cannot presort the files, as the entries a sometimes a little bit different.
Does anyone have a solution ?
files diff comm
asked Jul 12 at 12:36
Alistair Wallace
204
add a comment |Â
up vote
0
down vote
favorite
up vote
0
down vote
favorite
Good day everyone,
I know there are a lot of similar questions already answered, but I can't find a satisfying answer and it drives me nuts.
I have two files which both contain hostnames : one that holds all the ones opened to the Internet, the other logs all the scan results of ALL our hosts, opened to Internet or not.
File A (1111.com,1112.com,www.1113.com,1114.com)
File B (1111.com,1199.com,1299.com,www2.1329.com)
My goal is to print a file that would print ONLY the hosts that are exclusively in file B. I tried diff and comm but I cannot presort the files, as the entries a sometimes a little bit different.
Does anyone have a solution ?
files diff comm
asked Jul 12 at 12:36
Alistair Wallace
204
Good day everyone,
I know there are a lot of similar questions already answered, but I can't find a satisfying answer and it drives me nuts.
I have two files which both contain hostnames : one that holds all the ones opened to the Internet, the other logs all the scan results of ALL our hosts, opened to Internet or not.
File A (1111.com,1112.com,www.1113.com,1114.com)
File B (1111.com,1199.com,1299.com,www2.1329.com)
My goal is to print a file that would print ONLY the hosts that are exclusively in file B. I tried diff and comm but I cannot presort the files, as the entries a sometimes a little bit different.
Does anyone have a solution ?
files diff comm
asked Jul 12 at 12:36
Alistair Wallace
204
asked Jul 12 at 12:36
Alistair Wallace
204
asked Jul 12 at 12:36
Alistair Wallace
204
asked Jul 12 at 12:36
Alistair Wallace
204
204
add a comment |Â
add a comment |Â
1 Answer
1
active
oldest
votes
up vote
3
down vote
accepted
Not being able to presort the files isn’t a problem:
comm -13 <(sort fileA) <(sort fileB)
This gives
1199.com
1299.com
www2.1329.com
with your examples, assuming each host is on a separate line. -13 tells comm to drop column 1 (lines unique to the first file) and 3 (lines common to both files), leaving only lines unique to the second file.
answered Jul 12 at 12:42
Stephen Kitt
139k22296359
I just tried you solution and it works perfectly ! Much more readable than diff and exactly what I needed, thank you very much !
– Alistair Wallace
Jul 12 at 12:50
add a comment |Â
1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
up vote
3
down vote
accepted
Not being able to presort the files isn’t a problem:
comm -13 <(sort fileA) <(sort fileB)
This gives
1199.com
1299.com
www2.1329.com
with your examples, assuming each host is on a separate line. -13 tells comm to drop column 1 (lines unique to the first file) and 3 (lines common to both files), leaving only lines unique to the second file.
answered Jul 12 at 12:42
Stephen Kitt
139k22296359
I just tried you solution and it works perfectly ! Much more readable than diff and exactly what I needed, thank you very much !
– Alistair Wallace
Jul 12 at 12:50
add a comment |Â
up vote
3
down vote
accepted
Not being able to presort the files isn’t a problem:
comm -13 <(sort fileA) <(sort fileB)
This gives
1199.com
1299.com
www2.1329.com
with your examples, assuming each host is on a separate line. -13 tells comm to drop column 1 (lines unique to the first file) and 3 (lines common to both files), leaving only lines unique to the second file.
answered Jul 12 at 12:42
Stephen Kitt
139k22296359
I just tried you solution and it works perfectly ! Much more readable than diff and exactly what I needed, thank you very much !
– Alistair Wallace
Jul 12 at 12:50
add a comment |Â
up vote
3
down vote
accepted
up vote
3
down vote
accepted
Not being able to presort the files isn’t a problem:
comm -13 <(sort fileA) <(sort fileB)
This gives
1199.com
1299.com
www2.1329.com
with your examples, assuming each host is on a separate line. -13 tells comm to drop column 1 (lines unique to the first file) and 3 (lines common to both files), leaving only lines unique to the second file.
answered Jul 12 at 12:42
Stephen Kitt
139k22296359
Not being able to presort the files isn’t a problem:
comm -13 <(sort fileA) <(sort fileB)
This gives
1199.com
1299.com
www2.1329.com
with your examples, assuming each host is on a separate line. -13 tells comm to drop column 1 (lines unique to the first file) and 3 (lines common to both files), leaving only lines unique to the second file.
answered Jul 12 at 12:42
Stephen Kitt
139k22296359
answered Jul 12 at 12:42
Stephen Kitt
139k22296359
answered Jul 12 at 12:42
Stephen Kitt
139k22296359
answered Jul 12 at 12:42
Stephen Kitt
139k22296359
139k22296359
I just tried you solution and it works perfectly ! Much more readable than diff and exactly what I needed, thank you very much !
– Alistair Wallace
Jul 12 at 12:50
add a comment |Â
I just tried you solution and it works perfectly ! Much more readable than diff and exactly what I needed, thank you very much !
– Alistair Wallace
Jul 12 at 12:50
I just tried you solution and it works perfectly ! Much more readable than diff and exactly what I needed, thank you very much !
– Alistair Wallace
Jul 12 at 12:50
I just tried you solution and it works perfectly ! Much more readable than diff and exactly what I needed, thank you very much !
– Alistair Wallace
Jul 12 at 12:50
add a comment |Â
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