Login or Register to Ask a Question and Join Our Community


Shell Programming and Scripting

Count specific column values

Login to Discuss or Reply to this Discussion in Our Community

 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting Count specific column values
# 1  
Old 01-20-2014
Count specific column values
Hi all:
quick question!

I have the following data that resembles some thing like this:

Code:
i	am	tired
tired	am	i
what	is	up
hello	people	cool

I want to count (or at least isolate) all of the unique elements in the 2nd column.

I have tried this:
Code:
cut -f 2 | uniq 'input'

which does not work.
Any help/suggestions on how to solve the problem?
# 2  
Old 01-20-2014
Try :

You need to sort it before using uniq
Code:
$ cut -f2 file | sort | uniq

following gives you count of occurrence
Code:
$ cut -f2 file | sort | uniq -c

# 3  
Old 01-20-2014
In GNU sort, use -u option:
Code:
cut -f2 file | sort -u

# 4  
Old 01-20-2014
Hello,

Following may also help.

Code:
awk '!a[$2]++ {print $2}' file_name

Output will be as follows.

Code:
am
is
people


Thanks,
R. Singh
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. UNIX for Beginners Questions & Answers

Copy columns from one file into another and get sum of column values and row count

I have a file abc.csv, from which I need column 24(PurchaseOrder_TotalCost) to get the sum_of_amounts with date and row count into another file say output.csv abc.csv- UTF-8,,,,,,,,,,,,,,,,,,,,,,,,, ... (6 Replies)
Discussion started by: Tahir_M
6 Replies

2. Shell Programming and Scripting

Count number of unique values in each column of array

What is an efficient way of counting the number of unique values in a 400 column by 1000 row array and outputting the counts per column, assuming the unique values in the array are: A, B, C, D In other words the output should look like: Value COL1 COL2 COL3 A 50 51 52... (16 Replies)
Discussion started by: Geneanalyst
16 Replies

3. Shell Programming and Scripting

Count frequency of unique values in specific column

Hi, I have tab-deliminated data similar to the following: dot is-big 2 dot is-round 3 dot is-gray 4 cat is-big 3 hot in-summer 5 I want to count the frequency of each individual "unique" value in the 1st column. Thus, the desired output would be as follows: dot 3 cat 1 hot 1 is... (5 Replies)
Discussion started by: owwow14
5 Replies

4. Shell Programming and Scripting

Extract values from a specific column to the end

Hello friends, I have a text file with many columns (no. columns vary from row to row) separated by space. I need to collect all the values from 18th column to the end from each line and group them as pairs and then numbering like below.. 1. 18th-col-value 19th-col-value 2. 20th-col-value ... (5 Replies)
Discussion started by: prvnrk
5 Replies

5. Shell Programming and Scripting

Count specific characters at specific column positions

Hi all, I need help. I have an input text file (input.txt) like this: 21 GTGCAACACCGTCTTGAGAGG 50 21 GACCGAGACAGAATGAAAATC 73 21 CGGGTCTGTAGTAGCAAACGC 108 21 CGAAAAATGAACCCCTTTATC 220 21 CGTGATCCTGTTGAAGGGTCG 259 Now I need to count A/T/G/C numbers at each character location in column... (2 Replies)
Discussion started by: thienxho
2 Replies

6. Shell Programming and Scripting

How to count occurrences in a specific column

Hi, I need help to count the number of occurrences in $3 of file1.txt. I only know how to count by checking one by one and the code is like this: awk '$3 ~ /aku hanya poyo/ {++c} END {print c}' FS="\t" file1.txt But this is not wise to do as i have hundreds of different occurrences in that... (10 Replies)
Discussion started by: redse171
10 Replies

7. UNIX for Dummies Questions & Answers

count number of distinct values in each column with awk

Hi ! input: A|B|C|D A|F|C|E A|B|I|C A|T|I|B As the title of the thread says, I would need to get: 1|3|2|4 I tried different variants of this command, but I don't manage to obtain what I need: gawk 'BEGIN{FS=OFS="|"}{for(i=1; i<=NF; i++) a++} END {for (b in a) print b}' input ... (2 Replies)
Discussion started by: beca123456
2 Replies

8. UNIX for Dummies Questions & Answers

Count the lines with the same values in a column and write the output to a file

Hey everyone! I have a tab delimited data set which I want to create an output contained the calculation of number of those lines with a certain value in 2nd and 3rd column. my input file is like this: ID1 1 10M AAATTTCCGG ID2 5 4M ACGT ID3 5 8M ACCTTGGA ID4 5 ... (7 Replies)
Discussion started by: @man
7 Replies

9. Shell Programming and Scripting

Word count of values in a column

Hi friends, I have an input file of the following format a b c 1.11112 d e f 4.5767 g h i 19.098 k i l 87.9999 I am looking for an awk one liners that would help me in giving the following output output.txt Range of the column: 1.11112 to 87.9999 Total records between 1 and 10 - 2... (5 Replies)
Discussion started by: jacobs.smith
5 Replies

10. UNIX for Dummies Questions & Answers

count number of rows based on other column values

Could anybody help with this? I have input below ..... david,39 david,39 emelie,40 clarissa,22 bob,42 bob,42 tim,32 bob,39 david,38 emelie,47 what i want to do is count how many names there are with different ages, so output would be like this .... david,2 emelie,2 clarissa,1... (3 Replies)
Discussion started by: itsme999
3 Replies
Login or Register to Ask a Question