Sponsored Content
Top Forums UNIX for Dummies Questions & Answers how to get a subset of such a file Post 302679295 by rangarasan on Monday 30th of July 2012 03:46:02 PM
Old 07-30-2012
cut

Hi,

Try this one,
Code:
cut -c75000-85000 file

Cheers,
Ranga:-)
This User Gave Thanks to rangarasan For This Post:
 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Total file size of a subset list

Hello! I'm trying to find out the total file size of a subset list in a directory. For example, I do not need to know the total file size of all the files in a directory, but I need to know what the total size is of say, "ls -l *FEB08*" in a directory. Is there any easy way of doing this? ... (3 Replies)
Discussion started by: tekster757
3 Replies

2. Shell Programming and Scripting

Helping in parsing subset of text from a big results file

Hi All, I need some help to effectively parse out a subset of results from a big results file. Below is an example of the text file. Each block that I need to parse starts with "reading sequence file 10.codon" (next block starts with another number) and ends with **p-Value(s)**. I have given... (1 Reply)
Discussion started by: Lucky Ali
1 Replies

3. Shell Programming and Scripting

Count the number of words in some subset of file and disregard others

Hi All, I have some 6000 text files in a directory. My files are named like 1.txt, 2.txt 3.txt and so on until 6000.txt. I want to count the "number of words" in only first 3000 of them. Any suggestions? I know wc -w can count the number of words in a text file. I am using Red Hat Linux. (3 Replies)
Discussion started by: shoaibjameel123
3 Replies

4. UNIX for Dummies Questions & Answers

Swapping the columns of a text file for a subset of rows

Hi, I'd like to swap the columns 1 and 2 of a space-delimited text file but only for the first 1000 rows. How do I go about doing that? Thanks! (1 Reply)
Discussion started by: evelibertine
1 Replies

5. UNIX for Dummies Questions & Answers

Random selection of subset of sample from file

Hello Could you please help me to find a code that can randomly select 1224 lines from a file of 12240 and make tn output with 1224 line each. my input is txt file with 12240 lines like : 13474 999003507 0 0 2 -9 13475 999003508 0 0 2 -9 13476 999003509 0 0 1 -9 13477 999003510 0 0 1 -9 ... (7 Replies)
Discussion started by: biopsy
7 Replies

6. UNIX for Dummies Questions & Answers

How to subset data?

Hi. I have a large data file. the first column has unique identifiers. I have approximately 5 of these files and they have varying number of columns in their rows. I need to extract ~300 of the rows in to a separate file. I'm not looking for something that would do all 5 files at once, but... (7 Replies)
Discussion started by: kadm
7 Replies

7. Shell Programming and Scripting

Creating subset of a file based on specific columns

Hello Unix experts, I need a help to create a subset file. I know with cut comand, its very easy to select many different columns, or threshold. But here I have a bit problem as in my data file is big. And I don't want to identify the column numbers or names manually. I am trying to find any... (7 Replies)
Discussion started by: smitra
7 Replies

8. UNIX for Advanced & Expert Users

How to extract subset file from dataset?

Hello I have a data set which looks like this : progeny sire dam gender 12 1 3 M 13 2 4 F 14 2 5 F 15 6 5 ... (13 Replies)
Discussion started by: sajmar
13 Replies

9. Shell Programming and Scripting

How to read file line by line and compare subset of 1st line with 2nd?

Hi all, I have a log file say Test.log that gets updated continuously and it has data in pipe separated format. A sample log file would look like: <date1>|<data1>|<url1>|<result1> <date2>|<data2>|<url2>|<result2> <date3>|<data3>|<url3>|<result3> <date4>|<data4>|<url4>|<result4> What I... (3 Replies)
Discussion started by: pat_pramod
3 Replies

10. Shell Programming and Scripting

awk to filter file using another working on smaller subset

In the below awk if I use the attached file as the input, I get no results for TCF4. However, if I just copy that line from the attached file and use that as input I get results for TCF4. Basically the gene file is a 1 column list that is used to filter $8 of the attached file. When there is a... (9 Replies)
Discussion started by: cmccabe
9 Replies
PG_FETCH_ROW(3) 														   PG_FETCH_ROW(3)

pg_fetch_row - Get a row as an enumerated array

SYNOPSIS
array pg_fetch_row (resource $result, [int $row]) DESCRIPTION
pg_fetch_row(3) fetches one row of data from the result associated with the specified $result resource. Note This function sets NULL fields to the PHP NULL value. PARAMETERS
o $result - PostgreSQL query result resource, returned by pg_query(3), pg_query_params(3) or pg_execute(3) (among others). o $row - Row number in result to fetch. Rows are numbered from 0 upwards. If omitted or NULL, the next row is fetched. RETURN VALUES
An array, indexed from 0 upwards, with each value represented as a string. Database NULL values are returned as NULL. FALSE is returned if $row exceeds the number of rows in the set, there are no more rows, or on any other error. EXAMPLES
Example #1 pg_fetch_row(3) example <?php $conn = pg_pconnect("dbname=publisher"); if (!$conn) { echo "An error occurred. "; exit; } $result = pg_query($conn, "SELECT author, email FROM authors"); if (!$result) { echo "An error occurred. "; exit; } while ($row = pg_fetch_row($result)) { echo "Author: $row[0] E-mail: $row[1]"; echo "<br /> "; } ?> SEE ALSO
pg_query(3), pg_fetch_array(3), pg_fetch_object(3), pg_fetch_result(3). PHP Documentation Group PG_FETCH_ROW(3)
All times are GMT -4. The time now is 02:06 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy