Make copy of text file with columns removed (based on header) Post: 302932009

9 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Merging two files based on two columns to make a third file

Hi there, I'm trying to merge two files and make a third file. However, two of the columns need to match exactly in both files AND I want everything from both files in the output if the two columns match in that row. First file looks like this: chr1 10001980 T A Second...

2. Shell Programming and Scripting

Copy and Paste Columns in a Tab-Limited Text file

I have this text file with a very large number of columns (10,000+) and I want to move the first column to the position of the six column so that the text file looks like this: Before cutting and pasting ID Family Mother Father Trait Phenotype aaa bbb ...

3. UNIX for Dummies Questions & Answers

Extracting rows from a text file based on the values of two columns (given ranges)

Hi, I have a tab delimited text file with multiple columns. The second and third columns include numbers that have not been sorted. I want to extract rows where the second column includes a value between -0.01 and 0.01 (including both numbers) and the first third column includes a value between...

4. Shell Programming and Scripting

Reading columns from a text file and to make an array for each column

Hi, I am not so familiar with bash scripting and would appreciate your help here. I have a text file 'input.txt' like this: 2 3 4 5 6 7 8 9 10 I want to store each column in an array like this a ={2 5 8}, b={3 6 9}, c={4 7 10} so that i can access any element, e.g b=6 for the later use.

5. Shell Programming and Scripting

Extract columns based on header

Hi to all, I have two files. File1 has no header, two columns: sample1 A sample2 B sample3 B sample4 C sample5 A sample6 D sample7 D File2 has a header, except for the first 3 columns (chr,start,end). "sample1" is the header for the 4th ,5th ,6th columns, "sample2" is the header...

6. Emergency UNIX and Linux Support

Average columns based on header name

Hi Friends, I have files with columns like this. This sample input below is partial. Please check below for main file link. Each file will have only two rows. ...

7. UNIX for Beginners Questions & Answers

Keep only columns in first two rows based on partial header pattern.

I have this code below that only prints out certain columns from the first two rows (doesn't affect rows 3 and beyond). How can I do the same on a partial header pattern �G_TP� instead of having to know specific column numbers (e.g. 374-479)? I've tried many other commands within this pipe with no...

8. Shell Programming and Scripting

Find columns in a file based on header and print to new file

Hello, I have to fish out some specific columns from a file based on the header value. I have the list of columns I need in a different file. I thought I could read in the list of headers I need, # file with header names of required columns in required order headers_file=$2 # read contents...

9. Shell Programming and Scripting

Find header in a text file and prepend it to all lines until another header is found

I've been struggling with this one for quite a while and cannot seem to find a solution for this find/replace scenario. Perhaps I'm getting rusty. I have a file that contains a number of metrics (exactly 3 fields per line) from a few appliances that are collected in parallel. To identify the...

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