[SOLVED] Arrange output by frequency of occurrence
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I have a file with entries like:
A
A
B
C
A
B
B
A
...
I want the output to look something like: (arrange by how many times a particular entry occurs and write down how many times it occurs)
A 4
B 3
C 1
What code should I use? My file is very large and have tens of thousands of different entries, so it's not practical for me to define individually what A, B, C...are.
no i didnt, i'll try it now... i always learned that a sort was necessary before a uniq since uniq counts consecutive rows.
edit:
i think i'm rite:
Code:
[schneidz@hyper abg]$ uniq -c olivia.txt | sort -nr
2 B
2 A
1 C
1 B
1 A
1 A
[schneidz@hyper abg]$ sort olivia.txt | uniq -c | sort -n -r | awk '{print $2 " " $1}'
A 4
B 3
C 1
[schneidz@hyper abg]$ uniq --version
uniq (GNU coreutils) 8.10
Copyright (C) 2011 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
Written by Richard M. Stallman and David MacKenzie.
[schneidz@hyper abg]$ sort --version
sort (GNU coreutils) 8.10
Copyright (C) 2011 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
Written by Mike Haertel and Paul Eggert.
no i didnt, i'll try it now... i always learned that a sort was necessary before a uniq since uniq counts consecutive rows.
edit:
i think i'm rite:
Code:
[schneidz@hyper abg]$ uniq -c olivia.txt | sort -nr
2 B
2 A
1 C
1 B
1 A
1 A
[schneidz@hyper abg]$ sort olivia.txt | uniq -c | sort -n -r | awk '{print $2 " " $1}'
A 4
B 3
C 1
[schneidz@hyper abg]$ uniq --version
uniq (GNU coreutils) 8.10
Copyright (C) 2011 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
Written by Richard M. Stallman and David MacKenzie.
[schneidz@hyper abg]$ sort --version
sort (GNU coreutils) 8.10
Copyright (C) 2011 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
Written by Mike Haertel and Paul Eggert.
I stand corrected. Sorry about that, I should have tested with values that weren't already in order.
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