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Subsetting a variable by pattern
2019 Community Moderator ElectionHow to transform two delimited ASCII filesCompare 2 delimited files and output differencesbash: how to add assigned value to fileSubstitute Column With Result of CommandBasic grep/awk help - extracting all lines containing a list of terms from one file into a separate fileBash pattern to match directories whose names begin with a dot (period), by being “explicit”, instead of using “shopt -s dotglob”?How can I match the date after hitting a pattern match in awk to assure the match is current?extract word from file using information from a subset of the file (multiple steps)Print value of 2nd pattern if 1st pattern matches usernameReplace block of text with sed, awk, perl or vim
I have a delimited file with the following format that I have assigned to a bash variable "foo":
echo $foo
A 1 hello
B 2 hello
C 3 hello
D 4 world
E 5 world
F 6 world
I am trying to find a preferably awk-based solution that can split this variable into new text files such that all of the rows with identical values in column #3 are in one file. In a perfect world, the files would be named after the string in column #3 In this case, the files would be "hello.txt and "world.txt" with the following contents:
cat hello.txt
A 1 hello
B 2 hello
C 3 hello
cat world.txt
D 4 world
E 5 world
F 6 world
EDIT:
I should have included some previous attempts for this as mentioned below. I know how one could do this if the patterns were known ahead of time using something like grep, but am not sure how to allow it to accept wildcards. This is what I normally do if I know I will only need to extract by a very specific pattern.
echo "$foo" | grep -w "hello" > hello.txt
echo "$foo" | grep -w "world" > world.txt
awk wildcards
asked 22 hours ago
adamadam
83
New contributor
adam 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 delimited file with the following format that I have assigned to a bash variable "foo":
echo $foo
A 1 hello
B 2 hello
C 3 hello
D 4 world
E 5 world
F 6 world
I am trying to find a preferably awk-based solution that can split this variable into new text files such that all of the rows with identical values in column #3 are in one file. In a perfect world, the files would be named after the string in column #3 In this case, the files would be "hello.txt and "world.txt" with the following contents:
cat hello.txt
A 1 hello
B 2 hello
C 3 hello
cat world.txt
D 4 world
E 5 world
F 6 world
EDIT:
I should have included some previous attempts for this as mentioned below. I know how one could do this if the patterns were known ahead of time using something like grep, but am not sure how to allow it to accept wildcards. This is what I normally do if I know I will only need to extract by a very specific pattern.
echo "$foo" | grep -w "hello" > hello.txt
echo "$foo" | grep -w "world" > world.txt
awk wildcards
asked 22 hours ago
adamadam
83
New contributor
adam is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
You will get a much more friendly reception and much better help here if you show what code you have tried so far, however inadequate, and describe what problems you were having with it. Without code, your question looks like a request for free consulting and many people don't like that.
– John1024
22 hours ago
2
Thank you for the advice. I was really quite stuck and couldn't think of any solutions to this, which is why I had no code to show. The only solutions I could come up with required that the pattern be known beforehand, but will post an example as an edit.
– adam
22 hours ago
Excellent update.
– John1024
1 hour ago
add a comment |
I have a delimited file with the following format that I have assigned to a bash variable "foo":
echo $foo
A 1 hello
B 2 hello
C 3 hello
D 4 world
E 5 world
F 6 world
I am trying to find a preferably awk-based solution that can split this variable into new text files such that all of the rows with identical values in column #3 are in one file. In a perfect world, the files would be named after the string in column #3 In this case, the files would be "hello.txt and "world.txt" with the following contents:
cat hello.txt
A 1 hello
B 2 hello
C 3 hello
cat world.txt
D 4 world
E 5 world
F 6 world
EDIT:
I should have included some previous attempts for this as mentioned below. I know how one could do this if the patterns were known ahead of time using something like grep, but am not sure how to allow it to accept wildcards. This is what I normally do if I know I will only need to extract by a very specific pattern.
echo "$foo" | grep -w "hello" > hello.txt
echo "$foo" | grep -w "world" > world.txt
awk wildcards
asked 22 hours ago
adamadam
83
New contributor
adam 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 delimited file with the following format that I have assigned to a bash variable "foo":
echo $foo
A 1 hello
B 2 hello
C 3 hello
D 4 world
E 5 world
F 6 world
I am trying to find a preferably awk-based solution that can split this variable into new text files such that all of the rows with identical values in column #3 are in one file. In a perfect world, the files would be named after the string in column #3 In this case, the files would be "hello.txt and "world.txt" with the following contents:
cat hello.txt
A 1 hello
B 2 hello
C 3 hello
cat world.txt
D 4 world
E 5 world
F 6 world
EDIT:
I should have included some previous attempts for this as mentioned below. I know how one could do this if the patterns were known ahead of time using something like grep, but am not sure how to allow it to accept wildcards. This is what I normally do if I know I will only need to extract by a very specific pattern.
echo "$foo" | grep -w "hello" > hello.txt
echo "$foo" | grep -w "world" > world.txt
awk wildcards
awk wildcards
asked 22 hours ago
adamadam
83
New contributor
adam is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 22 hours ago
adamadam
83
New contributor
adam is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
edited 22 hours ago
adam
asked 22 hours ago
adamadam
83
New contributor
adam is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 22 hours ago
adamadam
83
asked 22 hours ago
adamadam
83
83
New contributor
adam is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
adam is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
adam is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
You will get a much more friendly reception and much better help here if you show what code you have tried so far, however inadequate, and describe what problems you were having with it. Without code, your question looks like a request for free consulting and many people don't like that.
– John1024
22 hours ago
2
Thank you for the advice. I was really quite stuck and couldn't think of any solutions to this, which is why I had no code to show. The only solutions I could come up with required that the pattern be known beforehand, but will post an example as an edit.
– adam
22 hours ago
Excellent update.
– John1024
1 hour ago
add a comment |
You will get a much more friendly reception and much better help here if you show what code you have tried so far, however inadequate, and describe what problems you were having with it. Without code, your question looks like a request for free consulting and many people don't like that.
– John1024
22 hours ago
2
Thank you for the advice. I was really quite stuck and couldn't think of any solutions to this, which is why I had no code to show. The only solutions I could come up with required that the pattern be known beforehand, but will post an example as an edit.
– adam
22 hours ago
Excellent update.
– John1024
1 hour ago
You will get a much more friendly reception and much better help here if you show what code you have tried so far, however inadequate, and describe what problems you were having with it. Without code, your question looks like a request for free consulting and many people don't like that.
– John1024
22 hours ago
You will get a much more friendly reception and much better help here if you show what code you have tried so far, however inadequate, and describe what problems you were having with it. Without code, your question looks like a request for free consulting and many people don't like that.
– John1024
22 hours ago
2
2
Thank you for the advice. I was really quite stuck and couldn't think of any solutions to this, which is why I had no code to show. The only solutions I could come up with required that the pattern be known beforehand, but will post an example as an edit.
– adam
22 hours ago
Thank you for the advice. I was really quite stuck and couldn't think of any solutions to this, which is why I had no code to show. The only solutions I could come up with required that the pattern be known beforehand, but will post an example as an edit.
– adam
22 hours ago
Excellent update.
– John1024
1 hour ago
Excellent update.
– John1024
1 hour ago
add a comment |
1 Answer
1
active
oldest
votes
You should be able to use
awk 'print > $3 ".txt"' <<< "$foo"
Ex.
$ echo "$foo"
A 1 hello
B 2 hello
C 3 hello
D 4 world
E 5 world
F 6 world
awk 'print > $3 ".txt"' <<< "$foo"
$ head hello,world.txt
==> hello.txt <==
A 1 hello
B 2 hello
C 3 hello
==> world.txt <==
D 4 world
E 5 world
F 6 world
answered 22 hours ago
steeldriversteeldriver
37.2k45287
Thank you! That makes sense and works perfectly.
– adam
22 hours ago
add a comment |
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1 Answer
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1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
You should be able to use
awk 'print > $3 ".txt"' <<< "$foo"
Ex.
$ echo "$foo"
A 1 hello
B 2 hello
C 3 hello
D 4 world
E 5 world
F 6 world
awk 'print > $3 ".txt"' <<< "$foo"
$ head hello,world.txt
==> hello.txt <==
A 1 hello
B 2 hello
C 3 hello
==> world.txt <==
D 4 world
E 5 world
F 6 world
answered 22 hours ago
steeldriversteeldriver
37.2k45287
Thank you! That makes sense and works perfectly.
– adam
22 hours ago
add a comment |
You should be able to use
awk 'print > $3 ".txt"' <<< "$foo"
Ex.
$ echo "$foo"
A 1 hello
B 2 hello
C 3 hello
D 4 world
E 5 world
F 6 world
awk 'print > $3 ".txt"' <<< "$foo"
$ head hello,world.txt
==> hello.txt <==
A 1 hello
B 2 hello
C 3 hello
==> world.txt <==
D 4 world
E 5 world
F 6 world
answered 22 hours ago
steeldriversteeldriver
37.2k45287
Thank you! That makes sense and works perfectly.
– adam
22 hours ago
add a comment |
You should be able to use
awk 'print > $3 ".txt"' <<< "$foo"
Ex.
$ echo "$foo"
A 1 hello
B 2 hello
C 3 hello
D 4 world
E 5 world
F 6 world
awk 'print > $3 ".txt"' <<< "$foo"
$ head hello,world.txt
==> hello.txt <==
A 1 hello
B 2 hello
C 3 hello
==> world.txt <==
D 4 world
E 5 world
F 6 world
answered 22 hours ago
steeldriversteeldriver
37.2k45287
You should be able to use
awk 'print > $3 ".txt"' <<< "$foo"
Ex.
$ echo "$foo"
A 1 hello
B 2 hello
C 3 hello
D 4 world
E 5 world
F 6 world
awk 'print > $3 ".txt"' <<< "$foo"
$ head hello,world.txt
==> hello.txt <==
A 1 hello
B 2 hello
C 3 hello
==> world.txt <==
D 4 world
E 5 world
F 6 world
answered 22 hours ago
steeldriversteeldriver
37.2k45287
answered 22 hours ago
steeldriversteeldriver
37.2k45287
answered 22 hours ago
steeldriversteeldriver
37.2k45287
answered 22 hours ago
steeldriversteeldriver
37.2k45287
37.2k45287
Thank you! That makes sense and works perfectly.
– adam
22 hours ago
add a comment |
Thank you! That makes sense and works perfectly.
– adam
22 hours ago
Thank you! That makes sense and works perfectly.
– adam
22 hours ago
Thank you! That makes sense and works perfectly.
– adam
22 hours ago
add a comment |
adam is a new contributor. Be nice, and check out our Code of Conduct.
adam is a new contributor. Be nice, and check out our Code of Conduct.
adam is a new contributor. Be nice, and check out our Code of Conduct.
adam is a new contributor. Be nice, and check out our Code of Conduct.
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You will get a much more friendly reception and much better help here if you show what code you have tried so far, however inadequate, and describe what problems you were having with it. Without code, your question looks like a request for free consulting and many people don't like that.
– John1024
22 hours ago
2
Thank you for the advice. I was really quite stuck and couldn't think of any solutions to this, which is why I had no code to show. The only solutions I could come up with required that the pattern be known beforehand, but will post an example as an edit.
– adam
22 hours ago
Excellent update.
– John1024
1 hour ago