Extract batch based on condition Post: 302939053

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Top Forums Shell Programming and Scripting Extract batch based on condition Post 302939053 by Don Cragun on Saturday 21st of March 2015 09:21:07 PM

03-21-2015

Registered User

If for some reason, you really need a way to do this only using shell built-ins, you could try something like the following with any POSIX-conforming shell:

Code:

#!/bin/ksh
IAm="${0##*/}"
Usage() {
	case "$1" in
	(2)	printf "%s: Can't read input_file: %s\n" "$IAm" "$2";;
	(4)	printf '%s: Invalid date in "|T" line: %s\n' "$IAm" "$2";;
	(5)	printf '%s: Invalid ID in ".T" line: %s\n' "$IAm" "$2";;
	(6)	printf '%s: Invalid tag: %s\n' "$IAM" "$2";;
	(7)	printf '%s: Invalid line length: %s\n' "$IAm" "$2";;
	esac >&2
	printf 'Usage: %s input_file output_file\n' "$IAm" >&2
	exit $1
}

[ $# -ne 2 ] && Usage 1
[ ! -r "$1" ] && Usage 2 "$1"
> "$2" || Usage 3 "$2"
while read -r tag data
do	case ${#tag} in
	(2)	case "$tag" in
		("|T")	[ ${#data} -ne 8 ] && Usage 4 "$tag $data"
			out="$tag $data"
			copy=0;;
		(".T")	[ "$data" = '' ] && Usage 5 "$tag"
			if [ $copy -eq 1 ]
			then	printf '%s\n%s %s\n' "$out" "$tag" "$data" > "$2"
			fi;;
		(*)	Usage 6 "$tag $data";;
		esac;;
	(17)	case "$tag" in
		(10000000000000000)
			;;
		(10*)	copy=1;;
		esac
		out=$(printf '%s\n%s' "$out" "$tag");;
	(*)	Usage 7 "$tag $data";;
	esac
done < "$1"

Don Cragun

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LEARN ABOUT PHP

radius_get_tagged_attr_tag

RADIUS_GET_TAGGED_ATTR_TAG(3)						 1					     RADIUS_GET_TAGGED_ATTR_TAG(3)

radius_get_tagged_attr_tag - Extracts the tag from a tagged attribute

SYNOPSIS

       integer radius_get_tagged_attr_tag (string  $data)

DESCRIPTION

	If a tagged attribute has been returned from radius_get_attr(3), radius_get_tagged_attr_data(3) will return the tag from the attribute.

PARAMETERS

	      o $data
		- The tagged attribute to be decoded.

RETURN VALUES

	Returns the tag from the tagged attribute or FALSE on failure.

EXAMPLES

       Example #1

	      radius_get_tagged_attr_tag(3) example

	      <?php
	      while ($resa = radius_get_attr($res)) {
		  if (!is_array($resa)) {
		      printf ("Error getting attribute: %s
",	radius_strerror($res));
		      exit;
		  }

		  $attr = $resa['attr'];
		  $data = $resa['data'];

		  $tag = radius_get_tagged_attr_tag($data);
		  $value = radius_get_tagged_attr_data($data);

		  printf("Got tagged attribute with tag %d and value %s
", $tag, $value);
	      }
	      ?>

SEE ALSO

       radius_get_attr(3), radius_get_tagged_attr_data(3).

PHP Documentation Group 											     RADIUS_GET_TAGGED_ATTR_TAG(3)