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Top Forums Shell Programming and Scripting Extracting values based on line-column numbers from multiple text files Post 302960888 by Bastami on Saturday 21st of November 2015 03:57:01 AM
Old 11-21-2015
Extracting values based on line-column numbers from multiple text files

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:
Code:
1    44
2    56  46
3    90  56  43
4    32  32  23  49
5    43  56  45  34  48
6    35  32  56  41  42  43
7    38  32  23  12  56  32  67
8    78  32  45  45  12  45  45  45
9    23  45  45  34  43  34  12  23  234
10   45  62  56  44  77  54  33  78  890  432
11   12 43   21  34  54  43  56  54  543  546  65   
.
.

I have to do the following 2 task with these files:
Task1:
I want to pick up a specific value (based on line and column number) from each file and put it to another file (say Task1.txt). In Task1.txt I have defined that for each file I want the value in what line and what column and the value should be added to the next column of this file.
Task1.txt
Code:
FileName      lineNumber         ColumnNumber     value  
File1               5                  4           45
File2               7                   6            ?
File3               10                  9            ?
File4               67                  55           ?

Task2
For the same files I want to pick up all values of the second column for a range of lines and put them into the Task2.txt file. Here is the Task2.txt file:
Task2.txt
Code:
FileName   Line-start   line-end
File1          4             8         32     43     35     38     78
File2          67           80
File3          345          380
File4          48            54

It will be appreciated if you kindly help me to solve these issues.
Regards
 

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PR(1)							      General Commands Manual							     PR(1)

NAME
pr - print file SYNOPSIS
pr [ option ... ] [ file ... ] DESCRIPTION
Pr produces a printed listing of one or more files on its standard output. The output is separated into pages headed by a date, the name of the file or a specified header, and the page number. With no file arguments, pr prints its standard input. Options apply to all following files but may be reset between files: -n Produce n-column output. +n Begin printing with page n. -b Balance columns on last page, in case of multi-column output. -d Double space. -en Set the tab stops for input text every n spaces. -h Take the next argument as a page header (file by default). -in Replace sequences of blanks in the output by tabs, using tab stops set every n spaces. -f Use formfeeds to separate pages. -ln Take the length of the page to be n lines instead of the default 66. -m Print all files simultaneously, each in one column. -n Number the lines of each file. -on Offset the left margin n character positions. -sc Separate columns by the single character c instead of aligning them with white space. A missing c is taken to be a tab. -t Do not print the 5-line header or the 5-line trailer normally supplied for each page. -wn For multi-column output, take the width of the page to be n characters instead of the default 72. SOURCE
/sys/src/cmd/pr.c SEE ALSO
cat(1), lp(1) PR(1)
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