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Top Forums Shell Programming and Scripting Replace data of a file with data from another file using shell scripting. Post 302777677 by paniklas on Friday 8th of March 2013 09:25:14 AM
Old 03-08-2013
Replace data of a file with data from another file using shell scripting.

Dears,

I'm new to shell scripting and i was wondering if you can help me with following matter.
I have a file containing 400,000 records. The file contains two columns like:
Code:
00611291,0270404000005453
25262597,1580401000016155
25779812,1700403000001786
00388934,1200408000000880
25522814,7270401000008341
01840654,1860408000000921
. .
. .
. .

I also have another file containing 400,000 records with more or less following format:

Code:
01000101EBP 002     00019356
01000202EBP 002     0120401000000048            985010000019356
01000303EBP 002     0120401000000048            00019356

For example i want to replace 00019356 (from second file) with value 00611291 (from first file).

At the beginning i'm reading a string in specific line with fixed position and fixed length like:

Code:
awk 'NR==2 {print substr($0,21,8)}' TEST_sdi
awk 'NR==3 {print substr($0,21,49),substr($0,56,64)}' TEST_sdi
awk 'NR==4 {print substr($0,165,193),substr($0,195,201)}' TEST_sdi

First problem is, how i can read a string from 400,000 records and second how i can replace those values with values from first file, i suppose sed will do the job but could you please give me some more Smiliedetails.

Many thanks!! Smilie

Last edited by vgersh99; 03-08-2013 at 10:44 AM.. Reason: code tags, please!
 

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platform::shell(n)					       Tcl Bundled Packages						platform::shell(n)

__________________________________________________________________________________________________________________________________________________

NAME
platform::shell - System identification support code and utilities SYNOPSIS
package require platform::shell ?1.1.4? platform::shell::generic shell platform::shell::identify shell platform::shell::platform shell _________________________________________________________________ DESCRIPTION
The platform::shell package provides several utility commands useful for the identification of the architecture of a specific Tcl shell. This package allows the identification of the architecture of a specific Tcl shell different from the shell running the package. The only requirement is that the other shell (identified by its path), is actually executable on the current machine. While for most platform this means that the architecture of the interrogated shell is identical to the architecture of the running shell this is not generally true. A counter example are all platforms which have 32 and 64 bit variants and where a 64bit system is able to run 32bit code. For these running and interrogated shell may have different 32/64 bit settings and thus different identifiers. For applications like a code repository it is important to identify the architecture of the shell which will actually run the installed packages, versus the architecture of the shell running the repository software. COMMANDS
platform::shell::identify shell This command does the same identification as platform::identify, for the specified Tcl shell, in contrast to the running shell. platform::shell::generic shell This command does the same identification as platform::generic, for the specified Tcl shell, in contrast to the running shell. platform::shell::platform shell This command returns the contents of tcl_platform(platform) for the specified Tcl shell. KEYWORDS
operating system, cpu architecture, platform, architecture platform::shell 1.1.4 platform::shell(n)
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