Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: shell script(Preferably awk or sed) to print selected number of columns from each row
Top Forums Shell Programming and Scripting shell script(Preferably awk or sed) to print selected number of columns from each row Post 302347223 by ks_reddy on Tuesday 25th of August 2009 07:28:23 AM
Old 08-25-2009
shell script(Preferably awk or sed) to print selected number of columns from each row
Hi Experts,

The question may look very silly by seeing the title, but please have a look at it clearly.

I have a text file where the first 5 columns in each row were supposed to be attributes of a sample(like sample name, number, status etc) and the next 25 columns are parameters on which I am interested in looking at.

But the problem is for some of the rows in the text file we don't have all the 5 columns(first 5 fields). Then the parameter column will be left offset by 1 or 2 columns etc depending on the number of missing attribute columns.

So I decided to print the last 25 columns starting from the last column so that for each sample I get my required parameters from which I need make some plots.

I need the script preferable using awk, sed and grep.

Many thanks friends..
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Compare selected columns from a file and print difference

I have learned file comparison from my previous post here. Then, it is comparing the whole line. Now, i have a new problem. I have two files with 3 columns separated with a "|". What i want to do is to compare the second and third column of file 1, and the second and third column of file 2. And... (4 Replies)
Discussion started by: kingpeejay
4 Replies

2. Shell Programming and Scripting

trying to print selected fields of selected lines by AWK

I am trying to print 1st, 2nd, 13th and 14th fields of a file of line numbers from 29 to 10029. I dont know how to put this in one code. Currently I am removing the selected lines by awk 'NR==29,NR==10029' File1 > File2 and then doing awk '{print $1, $2, $13, $14}' File2 > File3 Can... (3 Replies)
Discussion started by: ananyob
3 Replies

3. Shell Programming and Scripting

awk print specific columns one row at a time

Hello, I have the following piece of code: roleName =`cat $inputFile | awk -F';' '{ print $1 }'` roleDescription =`cat $inputFile | awk -F';' '{ print $2 }'` roleAuthProfile =`cat $inputFile | awk -F';' '{ print $3 }'` mappedUserID (5 Replies)
Discussion started by: pr0tocoldan
5 Replies

4. Shell Programming and Scripting

only print a selected row

this works: cat file.txt| awk 'NR==45,NR==55' but how do I assign variables instead of numbers: this does not work: cat file.txt | awk 'NR==$start,NR==$end' there need variables instead of numbers Sorry for my English Thank you for answer (3 Replies)
Discussion started by: gizmo16
3 Replies

5. Shell Programming and Scripting

awk: print columns depending on their number

hi guys, i have the following problem: i have a matrix with 3 columns and over 450 rows like this: 0.0165 0.0151 0.0230 0.0143 0.0153 0.0134 0.0135 0.0123 0.0195 0.0173 0.0153 0.0182 i now want to calculate the average of every line and divide every element of this... (1 Reply)
Discussion started by: waddle
1 Replies

6. Shell Programming and Scripting

print max number of 2 columns - awk

Is it possible to print max number of 2 columns - awk note: print max if the integer is positive and print min if the integer is negative input a 1 2 b 3 4 c 5 1 d -3 -5 d -5 -3 output a 2 b 4 c 5 d -5 d -5 (4 Replies)
Discussion started by: quincyjones
4 Replies

7. Shell Programming and Scripting

Awk/sed script for transposing any number of rows with header row

Greetings! I have been trying to find out a way to take a CSV file with a large number of rows, and a very large number of columns (in the thousands) and convert the rows to a single column of data, where the first row is a header representing the attribute name and the subsequent series of... (3 Replies)
Discussion started by: tntelle
3 Replies

8. Shell Programming and Scripting

Get row number from file1 and print that row of file2

Hi. How can we print those rows of file2 which are mentioned in file1. first character of file1 is a row number.. for eg file1 1:abc 3:ghi 6:pqr file2 a abc b def c ghi d jkl e mno f pqr ... (6 Replies)
Discussion started by: Abhiraj Singh
6 Replies

9. Shell Programming and Scripting

Bash script to print the smallest floating point number in a row that is not 0

Hello, I have often found bash to be difficult when it comes to floating point numbers. I have data with rows of tab delimited floating point numbers. I need to find the smallest number in each row that is not 0.0. Numbers can be negative and they do not come in any particular order for a given... (9 Replies)
Discussion started by: LMHmedchem
9 Replies

10. Shell Programming and Scripting

awk split columns to row after N number of column

I want to split this with every 5 or 50 depend on how much data the file will have. And remove the comma on the end Source file will have 001,0002,0003,004,005,0006,0007,007A,007B,007C,007E,007F,008A,008C Need Output from every 5 tab and remove the comma from end of each row ... (4 Replies)
Discussion started by: ranjancom2000
4 Replies

LEARN ABOUT MOJAVE

colrm

COLRM(1)						    BSD General Commands Manual 						  COLRM(1)

NAME

     colrm -- remove columns from a file

SYNOPSIS

     colrm [start [stop]]

DESCRIPTION

     The colrm utility removes selected columns from the lines of a file.  A column is defined as a single character in a line.  Input is read
     from the standard input.  Output is written to the standard output.

     If only the start column is specified, columns numbered less than the start column will be written.  If both start and stop columns are spec-
     ified, columns numbered less than the start column or greater than the stop column will be written.  Column numbering starts with one, not
     zero.

     Tab characters increment the column count to the next multiple of eight.  Backspace characters decrement the column count by one.

ENVIRONMENT

     The LANG, LC_ALL and LC_CTYPE environment variables affect the execution of colrm as described in environ(7).

EXIT STATUS

     The colrm utility exits 0 on success, and >0 if an error occurs.

SEE ALSO

     awk(1), column(1), cut(1), paste(1)

HISTORY

     The colrm command appeared in 3.0BSD.

BSD
								  August 4, 2004							       BSD
All times are GMT -4. The time now is 09:43 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy