Concatenating the contents of two files from the second row onwards
How to concatenate two files one to another using awk so that the first line of both is ignored?
Each file is in format:
#filename
4 5
5 6
Second for instance
#filename
7 6
1 4
Expected output:
4 5
5 6
7 6
1 4
awk
edited Feb 6 at 21:43
ilkkachu
59.1k892167
asked Feb 6 at 6:24
Lukáš AltmanLukáš Altman
345
add a comment |
How to concatenate two files one to another using awk so that the first line of both is ignored?
Each file is in format:
#filename
4 5
5 6
Second for instance
#filename
7 6
1 4
Expected output:
4 5
5 6
7 6
1 4
awk
edited Feb 6 at 21:43
ilkkachu
59.1k892167
asked Feb 6 at 6:24
Lukáš AltmanLukáš Altman
345
1
welcome to U&L, what's wrong withcat? e.g.cat f1 f2
– Archemar
Feb 6 at 6:35
What is the logic here? Is it just file 1 followed by file 2?
– Sparhawk
Feb 6 at 6:36
ok, thanks, it works
– Lukáš Altman
Feb 6 at 6:40
@Archemar Just concatenating withcatwould leave the header in the output.
– Kusalananda
Feb 6 at 7:43
@Kusalananda my bad, was early morning, I didn't see the catch.
– Archemar
Feb 6 at 8:03
add a comment |
How to concatenate two files one to another using awk so that the first line of both is ignored?
Each file is in format:
#filename
4 5
5 6
Second for instance
#filename
7 6
1 4
Expected output:
4 5
5 6
7 6
1 4
awk
edited Feb 6 at 21:43
ilkkachu
59.1k892167
asked Feb 6 at 6:24
Lukáš AltmanLukáš Altman
345
How to concatenate two files one to another using awk so that the first line of both is ignored?
Each file is in format:
#filename
4 5
5 6
Second for instance
#filename
7 6
1 4
Expected output:
4 5
5 6
7 6
1 4
awk
awk
edited Feb 6 at 21:43
ilkkachu
59.1k892167
asked Feb 6 at 6:24
Lukáš AltmanLukáš Altman
345
edited Feb 6 at 21:43
ilkkachu
59.1k892167
asked Feb 6 at 6:24
Lukáš AltmanLukáš Altman
345
edited Feb 6 at 21:43
ilkkachu
59.1k892167
edited Feb 6 at 21:43
ilkkachu
59.1k892167
edited Feb 6 at 21:43
ilkkachu
59.1k892167
59.1k892167
asked Feb 6 at 6:24
Lukáš AltmanLukáš Altman
345
asked Feb 6 at 6:24
Lukáš AltmanLukáš Altman
345
asked Feb 6 at 6:24
Lukáš AltmanLukáš Altman
345
345
1
welcome to U&L, what's wrong withcat? e.g.cat f1 f2
– Archemar
Feb 6 at 6:35
What is the logic here? Is it just file 1 followed by file 2?
– Sparhawk
Feb 6 at 6:36
ok, thanks, it works
– Lukáš Altman
Feb 6 at 6:40
@Archemar Just concatenating withcatwould leave the header in the output.
– Kusalananda
Feb 6 at 7:43
@Kusalananda my bad, was early morning, I didn't see the catch.
– Archemar
Feb 6 at 8:03
add a comment |
1
welcome to U&L, what's wrong withcat? e.g.cat f1 f2
– Archemar
Feb 6 at 6:35
What is the logic here? Is it just file 1 followed by file 2?
– Sparhawk
Feb 6 at 6:36
ok, thanks, it works
– Lukáš Altman
Feb 6 at 6:40
@Archemar Just concatenating withcatwould leave the header in the output.
– Kusalananda
Feb 6 at 7:43
@Kusalananda my bad, was early morning, I didn't see the catch.
– Archemar
Feb 6 at 8:03
1
1
welcome to U&L, what's wrong with
cat ? e.g. cat f1 f2– Archemar
Feb 6 at 6:35
welcome to U&L, what's wrong with
cat ? e.g. cat f1 f2– Archemar
Feb 6 at 6:35
What is the logic here? Is it just file 1 followed by file 2?
– Sparhawk
Feb 6 at 6:36
What is the logic here? Is it just file 1 followed by file 2?
– Sparhawk
Feb 6 at 6:36
ok, thanks, it works
– Lukáš Altman
Feb 6 at 6:40
ok, thanks, it works
– Lukáš Altman
Feb 6 at 6:40
@Archemar Just concatenating with
cat would leave the header in the output.– Kusalananda
Feb 6 at 7:43
@Archemar Just concatenating with
cat would leave the header in the output.– Kusalananda
Feb 6 at 7:43
@Kusalananda my bad, was early morning, I didn't see the catch.
– Archemar
Feb 6 at 8:03
@Kusalananda my bad, was early morning, I didn't see the catch.
– Archemar
Feb 6 at 8:03
add a comment |
4 Answers
4
active
oldest
votes
It looks as if you want to concatenate the contents of the two files while skipping the first row of each file.
Getting everything but the first row of a file can be done in many ways, for example using awk:
awk 'FNR > 1' file
With awk, it's actually quite easy to do what you'd want to do with that exact awk program:
$ awk 'FNR > 1' file1 file2
4 5
5 6
7 6
1 4
FNR is a variable that awk maintains that holds the current record number (line number by default) in the current file. If FNR in this program is strictly greater than 1, then the current line in the current file is not the first line of that file. A program with just a condition like this in it will cause the lines for which the condition is true to be printed.
answered Feb 6 at 7:40
KusalanandaKusalananda
131k17249408
add a comment |
For completeness, here's a GNU tail-based solution
tail -q -n +2 file1 file2
answered Feb 7 at 17:49
iruvariruvar
11.9k62960
add a comment |
Using sed i have done by below method
sed -n -e '1!p' f1 ;sed -n -e '1!p' f2
output
4 5
5 6
7 6
1 4
answered Feb 7 at 18:48
Praveen Kumar BSPraveen Kumar BS
1,470138
add a comment |
Why not
awk '{print $0}' file1 file2
edited Feb 7 at 17:01
Jeff Schaller
41.6k1056132
answered Feb 7 at 16:59
user335735user335735
1
...so that the first line of both is ignored...
– Jeff Schaller
Feb 7 at 17:01
add a comment |
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4 Answers
4
active
oldest
votes
4 Answers
4
active
oldest
votes
active
oldest
votes
active
oldest
votes
It looks as if you want to concatenate the contents of the two files while skipping the first row of each file.
Getting everything but the first row of a file can be done in many ways, for example using awk:
awk 'FNR > 1' file
With awk, it's actually quite easy to do what you'd want to do with that exact awk program:
$ awk 'FNR > 1' file1 file2
4 5
5 6
7 6
1 4
FNR is a variable that awk maintains that holds the current record number (line number by default) in the current file. If FNR in this program is strictly greater than 1, then the current line in the current file is not the first line of that file. A program with just a condition like this in it will cause the lines for which the condition is true to be printed.
answered Feb 6 at 7:40
KusalanandaKusalananda
131k17249408
add a comment |
It looks as if you want to concatenate the contents of the two files while skipping the first row of each file.
Getting everything but the first row of a file can be done in many ways, for example using awk:
awk 'FNR > 1' file
With awk, it's actually quite easy to do what you'd want to do with that exact awk program:
$ awk 'FNR > 1' file1 file2
4 5
5 6
7 6
1 4
FNR is a variable that awk maintains that holds the current record number (line number by default) in the current file. If FNR in this program is strictly greater than 1, then the current line in the current file is not the first line of that file. A program with just a condition like this in it will cause the lines for which the condition is true to be printed.
answered Feb 6 at 7:40
KusalanandaKusalananda
131k17249408
add a comment |
It looks as if you want to concatenate the contents of the two files while skipping the first row of each file.
Getting everything but the first row of a file can be done in many ways, for example using awk:
awk 'FNR > 1' file
With awk, it's actually quite easy to do what you'd want to do with that exact awk program:
$ awk 'FNR > 1' file1 file2
4 5
5 6
7 6
1 4
FNR is a variable that awk maintains that holds the current record number (line number by default) in the current file. If FNR in this program is strictly greater than 1, then the current line in the current file is not the first line of that file. A program with just a condition like this in it will cause the lines for which the condition is true to be printed.
answered Feb 6 at 7:40
KusalanandaKusalananda
131k17249408
It looks as if you want to concatenate the contents of the two files while skipping the first row of each file.
Getting everything but the first row of a file can be done in many ways, for example using awk:
awk 'FNR > 1' file
With awk, it's actually quite easy to do what you'd want to do with that exact awk program:
$ awk 'FNR > 1' file1 file2
4 5
5 6
7 6
1 4
FNR is a variable that awk maintains that holds the current record number (line number by default) in the current file. If FNR in this program is strictly greater than 1, then the current line in the current file is not the first line of that file. A program with just a condition like this in it will cause the lines for which the condition is true to be printed.
answered Feb 6 at 7:40
KusalanandaKusalananda
131k17249408
edited Feb 6 at 21:32
answered Feb 6 at 7:40
KusalanandaKusalananda
131k17249408
answered Feb 6 at 7:40
KusalanandaKusalananda
131k17249408
answered Feb 6 at 7:40
KusalanandaKusalananda
131k17249408
131k17249408
add a comment |
add a comment |
For completeness, here's a GNU tail-based solution
tail -q -n +2 file1 file2
answered Feb 7 at 17:49
iruvariruvar
11.9k62960
add a comment |
For completeness, here's a GNU tail-based solution
tail -q -n +2 file1 file2
answered Feb 7 at 17:49
iruvariruvar
11.9k62960
add a comment |
For completeness, here's a GNU tail-based solution
tail -q -n +2 file1 file2
answered Feb 7 at 17:49
iruvariruvar
11.9k62960
For completeness, here's a GNU tail-based solution
tail -q -n +2 file1 file2
answered Feb 7 at 17:49
iruvariruvar
11.9k62960
answered Feb 7 at 17:49
iruvariruvar
11.9k62960
answered Feb 7 at 17:49
iruvariruvar
11.9k62960
answered Feb 7 at 17:49
iruvariruvar
11.9k62960
11.9k62960
add a comment |
add a comment |
Using sed i have done by below method
sed -n -e '1!p' f1 ;sed -n -e '1!p' f2
output
4 5
5 6
7 6
1 4
answered Feb 7 at 18:48
Praveen Kumar BSPraveen Kumar BS
1,470138
add a comment |
Using sed i have done by below method
sed -n -e '1!p' f1 ;sed -n -e '1!p' f2
output
4 5
5 6
7 6
1 4
answered Feb 7 at 18:48
Praveen Kumar BSPraveen Kumar BS
1,470138
add a comment |
Using sed i have done by below method
sed -n -e '1!p' f1 ;sed -n -e '1!p' f2
output
4 5
5 6
7 6
1 4
answered Feb 7 at 18:48
Praveen Kumar BSPraveen Kumar BS
1,470138
Using sed i have done by below method
sed -n -e '1!p' f1 ;sed -n -e '1!p' f2
output
4 5
5 6
7 6
1 4
answered Feb 7 at 18:48
Praveen Kumar BSPraveen Kumar BS
1,470138
answered Feb 7 at 18:48
Praveen Kumar BSPraveen Kumar BS
1,470138
answered Feb 7 at 18:48
Praveen Kumar BSPraveen Kumar BS
1,470138
answered Feb 7 at 18:48
Praveen Kumar BSPraveen Kumar BS
1,470138
1,470138
add a comment |
add a comment |
Why not
awk '{print $0}' file1 file2
edited Feb 7 at 17:01
Jeff Schaller
41.6k1056132
answered Feb 7 at 16:59
user335735user335735
1
...so that the first line of both is ignored...
– Jeff Schaller
Feb 7 at 17:01
add a comment |
Why not
awk '{print $0}' file1 file2
edited Feb 7 at 17:01
Jeff Schaller
41.6k1056132
answered Feb 7 at 16:59
user335735user335735
1
...so that the first line of both is ignored...
– Jeff Schaller
Feb 7 at 17:01
add a comment |
Why not
awk '{print $0}' file1 file2
edited Feb 7 at 17:01
Jeff Schaller
41.6k1056132
answered Feb 7 at 16:59
user335735user335735
1
Why not
awk '{print $0}' file1 file2
edited Feb 7 at 17:01
Jeff Schaller
41.6k1056132
answered Feb 7 at 16:59
user335735user335735
1
edited Feb 7 at 17:01
Jeff Schaller
41.6k1056132
edited Feb 7 at 17:01
Jeff Schaller
41.6k1056132
edited Feb 7 at 17:01
Jeff Schaller
41.6k1056132
41.6k1056132
answered Feb 7 at 16:59
user335735user335735
1
answered Feb 7 at 16:59
user335735user335735
1
answered Feb 7 at 16:59
user335735user335735
1
1
...so that the first line of both is ignored...
– Jeff Schaller
Feb 7 at 17:01
add a comment |
...so that the first line of both is ignored...
– Jeff Schaller
Feb 7 at 17:01
...
so that the first line of both is ignored...– Jeff Schaller
Feb 7 at 17:01
...
so that the first line of both is ignored...– Jeff Schaller
Feb 7 at 17:01
add a comment |
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1
welcome to U&L, what's wrong with
cat? e.g.cat f1 f2– Archemar
Feb 6 at 6:35
What is the logic here? Is it just file 1 followed by file 2?
– Sparhawk
Feb 6 at 6:36
ok, thanks, it works
– Lukáš Altman
Feb 6 at 6:40
@Archemar Just concatenating with
catwould leave the header in the output.– Kusalananda
Feb 6 at 7:43
@Kusalananda my bad, was early morning, I didn't see the catch.
– Archemar
Feb 6 at 8:03