extract multiple sections of file Post: 302176690

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Top Forums Shell Programming and Scripting extract multiple sections of file Post 302176690 by drl on Tuesday 18th of March 2008 11:29:09 PM

03-19-2008

Registered User

Hi.

An alternate awk solution:

Code:

#!/usr/bin/env sh

# @(#) s1       Demonstrate extraction of range to separate files.

#  ____
# /
# |   Infrastructure BEGIN

echo
set -o nounset

debug=":"
debug="echo"

## The shebang using "env" line is designed for portability. For
#  higher security, use:
#
#  #!/bin/sh -

## Use local command version for the commands in this demonstration.

set +o nounset
echo "(Versions displayed with local utility \"version\")"
version >/dev/null 2>&1 && version =o $(_eat $0 $1) awk my-nl
set -o nounset

# Use nawk or /usr/xpg4/bin/awk on Solaris.

echo

FILE=${1-data1}
echo " Input file $FILE:"
cat $FILE

# |   Infrastructure END
# \
#  ---

echo
echo " Results from processing:"
awk '
BEGIN   { i = 0 }
/ST/            { i++ ; name = "file" i }
/ST/,/SE/       { print > name }
' $FILE

my-nl file?

exit 0

Producing:

Code:

% ./s1

(Versions displayed with local utility "version")
Linux 2.6.11-x1
GNU bash, version 2.05b.0(1)-release (i386-pc-linux-gnu)
GNU Awk 3.1.4
my-nl (local) 296

 Input file data1:
ST
first invoice
SE
ST
second invoice
SE
ST
third invoice
SE

 Results from processing:

==> file1 <==

  1 ST
  2 first invoice
  3 SE

==> file2 <==

  1 ST
  2 second invoice
  3 SE

==> file3 <==

  1 ST
  2 third invoice
  3 SE

Choose the base file name you wish in variable "name" ... cheers, drl

drl

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LEARN ABOUT OPENSOLARIS

echo

echo(3XCURSES)						  X/Open Curses Library Functions					    echo(3XCURSES)

NAME

       echo, noecho - enable/disable terminal echo

SYNOPSIS

       cc [ flag... ] file... -I /usr/xpg4/include  -L	/usr/xpg4/lib 
	-R  /usr/xpg4/lib  -lcurses  [ library... ]

       c89 [ flag... ] file... -lcurses [ library... ]

       #include <curses.h>

       int echo(void);

       int noecho(void);

DESCRIPTION

       The  echo()  function enables Echo mode for the current screen. The noecho() function disables Echo mode for the current screen. Initially,
       curses software echo mode is enabled and hardware echo mode of the tty driver is disabled. The echo() and noecho() functions control  soft-
       ware echo only. Hardware echo must remain disabled for the duration of the application, else the behavior is undefined.

RETURN VALUES

       Upon successful completion, these functions return OK. Otherwise, they return ERR.

ERRORS

       No errors are defined.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Standard			   |
       +-----------------------------+-----------------------------+
       |MT-Level		     |Unsafe			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       getch(3XCURSES), getstr(3XCURSES), initscr(3XCURSES), libcurses(3XCURSES), scanw(3XCURSES), attributes(5), standards(5)

SunOS 5.11							    5 Jun 2002							    echo(3XCURSES)