1. Shell Programming and Scripting

I am reading a file that contains over 5000 lines and I want to assign it to a shell variable array (which has a restriction of 1024 rows). I had an idea that if I could grab 1000 record hunks of the file, and pipe the records out, that I could perform a loop until I got to the end and process 1000... (5 Replies)

2. Shell Programming and Scripting

Hi I want to be able to extract a sequence of n lines from a file. ideas, commands and suggestions would be highly appreciated. Thanks (4 Replies)

3. Shell Programming and Scripting

hello, hope you can help me: ive got a file called archivos The content or structure of this file is ./chu0/filechu ./chu1/filechu I extract each line from this file manually and redirect to a file, and it Works fine, so the command line is: awk ‘/chu0/ {print $0}' < archivos >... (8 Replies)

4. Shell Programming and Scripting

I have two files file A which have a number in every row and file B which contains few hundred thousand rows with about 300 characters in each row (csv) What I need is to extract whole rows from B file (only these which numbers are indicated in A file) I also need to use cygwin. Any... (7 Replies)

5. Shell Programming and Scripting

This is the sample input file b 05/Jul/2010:07:00:10 a 05/Jul/2010:06:00:10 b 05/Jul/2010:07:00:10 c 05/Jul/2010:07:10:10 d 05/Jul/2010:08:00:10 e 05/Jul/2010:09:00:10 f 05/Jul/2010:10:00:10 h 05/Jul/2010:11:00:10 i 05/Jul/2010:12:00:10 j ... (9 Replies)

6. Shell Programming and Scripting

hi, i have two files. file1.sh echo "unix" echo "linux" file2.sh echo "unix linux forums" now the output i need is $./file2.sh unix linux forums (3 Replies)

7. Shell Programming and Scripting

Hi all, I have a file with many records with information as given below ID A16L2_HUMAN Reviewed; 619 AA. AC Q8NAA4; A5PL30; B2RPK5; Q658V4; Q6PID3; Q8NBG0; DT 20-MAY-2008, integrated into UniProtKB/Swiss-Prot. DT 20-MAY-2008, sequence version 2. DT ... (1 Reply)

8. Shell Programming and Scripting

Hi All, I am trying to get some lines from a file i did it with while-do-loop. since the files are huge it is taking much time. now i want to make it faster. The requirement is the file will be having 1 million lines. The format is like below. ##transaction, , , ,blah, blah... (38 Replies)

9. Shell Programming and Scripting

Hi all; Here is my file which contains a list of files (recent versions of files are in red). This file is dynamic, files versions can change at any time (versions can increment) filename ------------------------------------------------------- ... (8 Replies)

10. UNIX for Beginners Questions & Answers

Dears experts i have UNIX file that contain 4 million lines , i need to extract all lines that have entiries saved in VI file , i have below comand but it takes tooooo long time : for i in `cat file1.csv`; do cat dump | grep -i $i >> file2.csv; done where : file1.csv = VI file that... (12 Replies)