03-08-2012
Extracting the last column of a text file
I would like to extract the last column of a text file but different rows of the text file have different numbers of columns. How do I go about doing that? Thanks!
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
I have a tab delimited text file where the first column can take on three different values : 100, 150, 250. I want to extract all the rows where the first column is 100 and put them into a separate text file and so on. This is what my text file looks like now:
100 rs3794811 0.01 0.3434... (1 Reply)
Discussion started by: evelibertine
1 Replies
2. UNIX for Dummies Questions & Answers
I have a tab delimited text file where the first column can take on three different values : 100, 150, 250. I want to extract all the rows where the first column is 100 and put them into a separate text file and so on. This is what my text file looks like now:
100 rs3794811 0.01 0.3434
100... (1 Reply)
Discussion started by: evelibertine
1 Replies
3. UNIX for Dummies Questions & Answers
I have a text file where the second column is a list of numbers going from small to large. I want to extract the rows where the second column is smaller than or equal to 0.0001.
My input:
rs10082730 9e-08 12 46002702
rs2544081 1e-07 12 46015487
rs1425136 1e-06 7 35396742
rs2712590... (1 Reply)
Discussion started by: evelibertine
1 Replies
4. UNIX for Dummies Questions & Answers
I have a space delimited text file. I want to extract rows where the third column has 0 as a value and write those rows into a new space delimited text file. How do I go about doing that? Thanks! (2 Replies)
Discussion started by: evelibertine
2 Replies
5. UNIX for Dummies Questions & Answers
Hi,
I am trying to extract lines from a text file given a text file containing line numbers to be extracted from the first file. How do I go about doing this? Thanks! (1 Reply)
Discussion started by: evelibertine
1 Replies
6. UNIX for Dummies Questions & Answers
Hi,
I have a file that looks like the following:
10 100080417 rs7915867 ILMN_1343295 12 6243093 7747537
10 100190264 rs2296431 ILMN_1343295 12 6643093 6647537
10 100719451 SNP94374 ILMN_1343295 12 6688093 7599537 ... (1 Reply)
Discussion started by: evelibertine
1 Replies
7. Shell Programming and Scripting
I have the file like this:
Timestamp URL Text 1331635241000 http://example.com Peoples footage at www.test.com,http://example4.com 1331635231000 http://example1.net crack the nuts http://example6.com 1331635280000 http://example2.net ... (0 Replies)
Discussion started by: csim_mohan
0 Replies
8. Shell Programming and Scripting
I have the file like this:
Timestamp URL Text 1331635241000 http://example.com Peoples footage at www.test.com,http://example4.com 1331635231000 http://example1.net crack the nuts http://example6.com 1331635280000 http://example2.net ... (0 Replies)
Discussion started by: csim_mohan
0 Replies
9. Shell Programming and Scripting
I have the file like this:
Timestamp URL Text 1331635241000 http://example.com Peoples footage at www.test.com,http://example4.com 1331635231000 http://example1.net crack the nuts http://example6.com 1331635280000 http://example2.net ... (3 Replies)
Discussion started by: csim_mohan
3 Replies
10. Shell Programming and Scripting
Dear All,
I have to solve the following problems with multiple tab-separated text file but I don't know how. Any help would be greatly appreciated. I have access to Linux mint (but not as a professional).
I have multiple tab-delimited files with the following structure:
file1:
1 44
2 ... (5 Replies)
Discussion started by: Bastami
5 Replies
COLUMN(1) BSD General Commands Manual COLUMN(1)
NAME
column -- columnate lists
SYNOPSIS
column [-tx] [-c columns] [-s sep] [file ...]
DESCRIPTION
The column utility formats its input into multiple columns. Rows are filled before columns. Input is taken from file operands, or, by
default, from the standard input. Empty lines are ignored.
The options are as follows:
-c Output is formatted for a display columns wide.
-s Specify a set of characters to be used to delimit columns for the -t option.
-t Determine the number of columns the input contains and create a table. Columns are delimited with whitespace, by default, or with
the characters supplied using the -s option. Useful for pretty-printing displays.
-x Fill columns before filling rows.
Column exits 0 on success, >0 if an error occurred.
ENVIRONMENT
COLUMNS The environment variable COLUMNS is used to determine the size of the screen if no other information is available.
EXAMPLES
(printf "PERM LINKS OWNER GROUP SIZE MONTH DAY HH:MM/YEAR NAME
"
; ls -l | sed 1d) | column -t
SEE ALSO
colrm(1), ls(1), paste(1), sort(1)
HISTORY
The column command appeared in 4.3BSD-Reno.
AVAILABILITY
The column command is part of the util-linux-ng package and is available from ftp://ftp.kernel.org/pub/linux/utils/util-linux-ng/.
BSD
June 6, 1993 BSD