Remove even numbered lines of text file
I have a text file on a Linux system, and would like to remove every second line, which is "even" numbered. Example: I would like to remove the second line of the file, the fourth, sixth, eighth line, and so on, until you complete filtering of the file completely.
file.txt
86850343
88065952
89381968
89536251
89714939
89826424
90124775
90672109
91408453
92438737
I would like this output:
86850343
89381968
89714939
90124775
91408453
Any help will be very welcome.
Thank you.
text-processing awk sed
edited 14 mins ago
Sparhawk
9,27363991
asked 29 mins ago
logvca
111
New contributor
logvca 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 a text file on a Linux system, and would like to remove every second line, which is "even" numbered. Example: I would like to remove the second line of the file, the fourth, sixth, eighth line, and so on, until you complete filtering of the file completely.
file.txt
86850343
88065952
89381968
89536251
89714939
89826424
90124775
90672109
91408453
92438737
I would like this output:
86850343
89381968
89714939
90124775
91408453
Any help will be very welcome.
Thank you.
text-processing awk sed
edited 14 mins ago
Sparhawk
9,27363991
asked 29 mins ago
logvca
111
New contributor
logvca 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 a text file on a Linux system, and would like to remove every second line, which is "even" numbered. Example: I would like to remove the second line of the file, the fourth, sixth, eighth line, and so on, until you complete filtering of the file completely.
file.txt
86850343
88065952
89381968
89536251
89714939
89826424
90124775
90672109
91408453
92438737
I would like this output:
86850343
89381968
89714939
90124775
91408453
Any help will be very welcome.
Thank you.
text-processing awk sed
edited 14 mins ago
Sparhawk
9,27363991
asked 29 mins ago
logvca
111
New contributor
logvca is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
I have a text file on a Linux system, and would like to remove every second line, which is "even" numbered. Example: I would like to remove the second line of the file, the fourth, sixth, eighth line, and so on, until you complete filtering of the file completely.
file.txt
86850343
88065952
89381968
89536251
89714939
89826424
90124775
90672109
91408453
92438737
I would like this output:
86850343
89381968
89714939
90124775
91408453
Any help will be very welcome.
Thank you.
text-processing awk sed
text-processing awk sed
edited 14 mins ago
Sparhawk
9,27363991
asked 29 mins ago
logvca
111
New contributor
logvca is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
edited 14 mins ago
Sparhawk
9,27363991
asked 29 mins ago
logvca
111
New contributor
logvca is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
edited 14 mins ago
Sparhawk
9,27363991
edited 14 mins ago
Sparhawk
9,27363991
edited 14 mins ago
Sparhawk
9,27363991
9,27363991
asked 29 mins ago
logvca
111
New contributor
logvca is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 29 mins ago
logvca
111
asked 29 mins ago
logvca
111
111
New contributor
logvca is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
logvca is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
logvca 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 |
2 Answers
2
active
oldest
votes
With GNU Sed's n-skip-m notation:
$ sed '2~2d' file.txt
86850343
89381968
89714939
90124775
91408453
answered 26 mins ago
steeldriver
34.4k35083
Thanks! Works fine!!!
– logvca
24 mins ago
add a comment |
You can't really beat sed for this sort of thing, but here are some other options:
$ awk 'NR%2==0' file
88065952
89536251
89826424
90672109
92438737
$ perl -ne 'print if $.%2==0' file
88065952
89536251
89826424
90672109
92438737
$ perl -ne 'print unless $.%2' file
88065952
89536251
89826424
90672109
92438737
$ perl -ne 'not $.%2 && print' file
86850343
89381968
89714939
90124775
91408453
answered 24 mins ago
terdon♦
128k31249423
add a comment |
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2 Answers
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active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
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active
oldest
votes
With GNU Sed's n-skip-m notation:
$ sed '2~2d' file.txt
86850343
89381968
89714939
90124775
91408453
answered 26 mins ago
steeldriver
34.4k35083
Thanks! Works fine!!!
– logvca
24 mins ago
add a comment |
With GNU Sed's n-skip-m notation:
$ sed '2~2d' file.txt
86850343
89381968
89714939
90124775
91408453
answered 26 mins ago
steeldriver
34.4k35083
Thanks! Works fine!!!
– logvca
24 mins ago
add a comment |
With GNU Sed's n-skip-m notation:
$ sed '2~2d' file.txt
86850343
89381968
89714939
90124775
91408453
answered 26 mins ago
steeldriver
34.4k35083
With GNU Sed's n-skip-m notation:
$ sed '2~2d' file.txt
86850343
89381968
89714939
90124775
91408453
answered 26 mins ago
steeldriver
34.4k35083
edited 19 mins ago
answered 26 mins ago
steeldriver
34.4k35083
answered 26 mins ago
steeldriver
34.4k35083
answered 26 mins ago
steeldriver
34.4k35083
34.4k35083
Thanks! Works fine!!!
– logvca
24 mins ago
add a comment |
Thanks! Works fine!!!
– logvca
24 mins ago
Thanks! Works fine!!!
– logvca
24 mins ago
Thanks! Works fine!!!
– logvca
24 mins ago
add a comment |
You can't really beat sed for this sort of thing, but here are some other options:
$ awk 'NR%2==0' file
88065952
89536251
89826424
90672109
92438737
$ perl -ne 'print if $.%2==0' file
88065952
89536251
89826424
90672109
92438737
$ perl -ne 'print unless $.%2' file
88065952
89536251
89826424
90672109
92438737
$ perl -ne 'not $.%2 && print' file
86850343
89381968
89714939
90124775
91408453
answered 24 mins ago
terdon♦
128k31249423
add a comment |
You can't really beat sed for this sort of thing, but here are some other options:
$ awk 'NR%2==0' file
88065952
89536251
89826424
90672109
92438737
$ perl -ne 'print if $.%2==0' file
88065952
89536251
89826424
90672109
92438737
$ perl -ne 'print unless $.%2' file
88065952
89536251
89826424
90672109
92438737
$ perl -ne 'not $.%2 && print' file
86850343
89381968
89714939
90124775
91408453
answered 24 mins ago
terdon♦
128k31249423
add a comment |
You can't really beat sed for this sort of thing, but here are some other options:
$ awk 'NR%2==0' file
88065952
89536251
89826424
90672109
92438737
$ perl -ne 'print if $.%2==0' file
88065952
89536251
89826424
90672109
92438737
$ perl -ne 'print unless $.%2' file
88065952
89536251
89826424
90672109
92438737
$ perl -ne 'not $.%2 && print' file
86850343
89381968
89714939
90124775
91408453
answered 24 mins ago
terdon♦
128k31249423
You can't really beat sed for this sort of thing, but here are some other options:
$ awk 'NR%2==0' file
88065952
89536251
89826424
90672109
92438737
$ perl -ne 'print if $.%2==0' file
88065952
89536251
89826424
90672109
92438737
$ perl -ne 'print unless $.%2' file
88065952
89536251
89826424
90672109
92438737
$ perl -ne 'not $.%2 && print' file
86850343
89381968
89714939
90124775
91408453
answered 24 mins ago
terdon♦
128k31249423
edited 10 mins ago
answered 24 mins ago
terdon♦
128k31249423
answered 24 mins ago
terdon♦
128k31249423
answered 24 mins ago
terdon♦
128k31249423
128k31249423
add a comment |
add a comment |
logvca is a new contributor. Be nice, and check out our Code of Conduct.
logvca is a new contributor. Be nice, and check out our Code of Conduct.
logvca is a new contributor. Be nice, and check out our Code of Conduct.
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