Remove lines from a file based on patterns in another file which may partially match a particular column in...
I have searched for similar answers but none solve the partial match problem.
Patterns file is file2 and lines to be removed are in file1.csv which is a pretty big file with far more columns than those represented here.
I have the following fields in file1:
Timestamp,URL,Page Title
156398439,"http://www.example1.com/?q=param1","example1"
159053095,"http://example2.com/?q=param1&w=param2","example2"
153793494,"http://example3.com/?q=param1","example3"
etc.
file2 contains:
http://example2.com
Ideally I would like to delete line 2 because it contains the pattern in $2 column and get only 1st and 3rd lines in the output file.
So far I have tried:
awk 'NR==FNR{neg[$1]=$1;next}; ($2 !~ neg[$1]){print $0}' file2 FS='([^,]*)|("[^"]+")' file1.csv > output.csv
but can't get it to work. For some strange reason grep fails:
grep -vwF -f file2 file1.csv > output.csv
text-processing awk csv
asked 12 mins ago
Mallik KumarMallik Kumar
11
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Mallik Kumar is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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I have searched for similar answers but none solve the partial match problem.
Patterns file is file2 and lines to be removed are in file1.csv which is a pretty big file with far more columns than those represented here.
I have the following fields in file1:
Timestamp,URL,Page Title
156398439,"http://www.example1.com/?q=param1","example1"
159053095,"http://example2.com/?q=param1&w=param2","example2"
153793494,"http://example3.com/?q=param1","example3"
etc.
file2 contains:
http://example2.com
Ideally I would like to delete line 2 because it contains the pattern in $2 column and get only 1st and 3rd lines in the output file.
So far I have tried:
awk 'NR==FNR{neg[$1]=$1;next}; ($2 !~ neg[$1]){print $0}' file2 FS='([^,]*)|("[^"]+")' file1.csv > output.csv
but can't get it to work. For some strange reason grep fails:
grep -vwF -f file2 file1.csv > output.csv
text-processing awk csv
asked 12 mins ago
Mallik KumarMallik Kumar
11
New contributor
Mallik Kumar is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
I have searched for similar answers but none solve the partial match problem.
Patterns file is file2 and lines to be removed are in file1.csv which is a pretty big file with far more columns than those represented here.
I have the following fields in file1:
Timestamp,URL,Page Title
156398439,"http://www.example1.com/?q=param1","example1"
159053095,"http://example2.com/?q=param1&w=param2","example2"
153793494,"http://example3.com/?q=param1","example3"
etc.
file2 contains:
http://example2.com
Ideally I would like to delete line 2 because it contains the pattern in $2 column and get only 1st and 3rd lines in the output file.
So far I have tried:
awk 'NR==FNR{neg[$1]=$1;next}; ($2 !~ neg[$1]){print $0}' file2 FS='([^,]*)|("[^"]+")' file1.csv > output.csv
but can't get it to work. For some strange reason grep fails:
grep -vwF -f file2 file1.csv > output.csv
text-processing awk csv
asked 12 mins ago
Mallik KumarMallik Kumar
11
New contributor
Mallik Kumar is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
I have searched for similar answers but none solve the partial match problem.
Patterns file is file2 and lines to be removed are in file1.csv which is a pretty big file with far more columns than those represented here.
I have the following fields in file1:
Timestamp,URL,Page Title
156398439,"http://www.example1.com/?q=param1","example1"
159053095,"http://example2.com/?q=param1&w=param2","example2"
153793494,"http://example3.com/?q=param1","example3"
etc.
file2 contains:
http://example2.com
Ideally I would like to delete line 2 because it contains the pattern in $2 column and get only 1st and 3rd lines in the output file.
So far I have tried:
awk 'NR==FNR{neg[$1]=$1;next}; ($2 !~ neg[$1]){print $0}' file2 FS='([^,]*)|("[^"]+")' file1.csv > output.csv
but can't get it to work. For some strange reason grep fails:
grep -vwF -f file2 file1.csv > output.csv
text-processing awk csv
text-processing awk csv
asked 12 mins ago
Mallik KumarMallik Kumar
11
New contributor
Mallik Kumar is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 12 mins ago
Mallik KumarMallik Kumar
11
New contributor
Mallik Kumar is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 12 mins ago
Mallik KumarMallik Kumar
11
New contributor
Mallik Kumar is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 12 mins ago
Mallik KumarMallik Kumar
11
asked 12 mins ago
Mallik KumarMallik Kumar
11
11
New contributor
Mallik Kumar is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
Mallik Kumar is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Mallik Kumar is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
add a comment |
1 Answer
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What you have looks a decent attempt, but the clause for regex match does not work as you wanted it to do. You can do something like below where you take the regex comparison inside the action part on file1
awk 'FNR == NR { neg[$1]; next }{ for ( i in neg ) if ( $2 !~ i) print }' file2 FS="," file1
answered 3 mins ago
InianInian
4,015824
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1 Answer
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active
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1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
What you have looks a decent attempt, but the clause for regex match does not work as you wanted it to do. You can do something like below where you take the regex comparison inside the action part on file1
awk 'FNR == NR { neg[$1]; next }{ for ( i in neg ) if ( $2 !~ i) print }' file2 FS="," file1
answered 3 mins ago
InianInian
4,015824
add a comment |
What you have looks a decent attempt, but the clause for regex match does not work as you wanted it to do. You can do something like below where you take the regex comparison inside the action part on file1
awk 'FNR == NR { neg[$1]; next }{ for ( i in neg ) if ( $2 !~ i) print }' file2 FS="," file1
answered 3 mins ago
InianInian
4,015824
add a comment |
What you have looks a decent attempt, but the clause for regex match does not work as you wanted it to do. You can do something like below where you take the regex comparison inside the action part on file1
awk 'FNR == NR { neg[$1]; next }{ for ( i in neg ) if ( $2 !~ i) print }' file2 FS="," file1
answered 3 mins ago
InianInian
4,015824
What you have looks a decent attempt, but the clause for regex match does not work as you wanted it to do. You can do something like below where you take the regex comparison inside the action part on file1
awk 'FNR == NR { neg[$1]; next }{ for ( i in neg ) if ( $2 !~ i) print }' file2 FS="," file1
answered 3 mins ago
InianInian
4,015824
answered 3 mins ago
InianInian
4,015824
answered 3 mins ago
InianInian
4,015824
answered 3 mins ago
InianInian
4,015824
4,015824
add a comment |
add a comment |
Mallik Kumar is a new contributor. Be nice, and check out our Code of Conduct.
Mallik Kumar is a new contributor. Be nice, and check out our Code of Conduct.
Mallik Kumar is a new contributor. Be nice, and check out our Code of Conduct.
Mallik Kumar is a new contributor. Be nice, and check out our Code of Conduct.
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