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Top Forums Shell Programming and Scripting Bash script to read a file from particular line till required line and process Post 302923602 by junior-helper on Monday 3rd of November 2014 06:31:31 PM
Old 11-03-2014
I guess this is it Smilie WARNING: There is no error checking at all!

Code:
#!/bin/bash

ufile=$1 #user file name
ulf=$2 #user line from
ult=$3 #user line to

ifile=$4 #item file name
ilf=$5 #item line from
ilt=$6 #item line to

for user in `awk -vULF=$ulf -vULT=$ult 'NR>=ULF && NR<=ULT' $ufile` ; do
 for item in `awk -vILF=$ilf -vILT=$ilt 'NR>=ILF && NR<=ILT' $ifile` ; do
  echo $user @ $item
 done
done

Demonstration:
Code:
$ for i in {1..100}; do echo user$i >>userlist; done
$ for i in {1..100}; do echo item$i >>itemlist; done
$
$ ./script.sh userlist 23 30 itemlist 60 65
user23 @ item60
user23 @ item61
user23 @ item62
user23 @ item63
user23 @ item64
user23 @ item65
user24 @ item60
user24 @ item61
user24 @ item62
user24 @ item63
user24 @ item64
user24 @ item65
user25 @ item60
user25 @ item61
user25 @ item62
user25 @ item63
user25 @ item64
user25 @ item65
user26 @ item60
user26 @ item61
user26 @ item62
user26 @ item63
user26 @ item64
user26 @ item65
user27 @ item60
user27 @ item61
user27 @ item62
user27 @ item63
user27 @ item64
user27 @ item65
user28 @ item60
user28 @ item61
user28 @ item62
user28 @ item63
user28 @ item64
user28 @ item65
user29 @ item60
user29 @ item61
user29 @ item62
user29 @ item63
user29 @ item64
user29 @ item65
user30 @ item60
user30 @ item61
user30 @ item62
user30 @ item63
user30 @ item64
user30 @ item65
$

 

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script(1)							   User Commands							 script(1)

NAME
script - make record of a terminal session SYNOPSIS
script [-a] [filename] DESCRIPTION
The script utility makes a record of everything printed on your screen. The record is written to filename. If no file name is given, the record is saved in the file typescript. See WARNINGS. The script command forks and creates a sub-shell, according to the value of $SHELL, and records the text from this session. The script ends when the forked shell exits or when Control-d is typed. OPTIONS
The following option is supported: -a Appends the session record to filename, rather than overwriting it. NOTES
script places everything that appears on the screen in filename, including prompts. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcsu | +-----------------------------+-----------------------------+ |CSI |Enabled | +-----------------------------+-----------------------------+ SEE ALSO
attributes(5) WARNINGS
script can pose a security risk when used in directories that are writable by other users (for example, /tmp), especially when run by a privileged user, that is, root. Be sure that typescript is not a link before running script. SunOS 5.10 30 Jan 2004 script(1)
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