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Full Discussion: ...yet another string of awk/sed questions from a RegExp-Challenged luser %-\
Top Forums Shell Programming and Scripting ...yet another string of awk/sed questions from a RegExp-Challenged luser %-\ Post 302358496 by Scrutinizer on Friday 2nd of October 2009 06:19:12 PM
Old 10-02-2009
Nice puzzle, Steve. This works in ksh. Do you have that on your system?

Code:
#!/bin/ksh
{ sed '/masks/ s/^/\n/'  infile | sed 's/^\([CDS]\) \(.*\)$/\2 \1/' |\
while read line; do
  case $line in
      \[*) printf "$prevline $line\n"
           prevline="" ;;
      *subnets*|*masks*)
           echo;&
      *)   if [[ $prevline != "" ]]; then
             echo $prevline
           fi
           prevline=$line  ;;
  esac;
done;
if [[ $prevline != "" ]]; then
  echo $prevline
fi } | \
while read firstline; do
  while read line; do
    if [[ $firstline != "" ]]; then
      echo $firstline
      firstline=""
    fi
    if [[ $line != "" ]]; then
      echo $line
    else
      break
    fi
  done|sort -n -t. -k1,1 -k2,2 -k3,3 -k4,4
  echo
done
if [[ $firstline != "" ]]; then
  echo $firstline
fi

The sort statement is very implementation dependent. This syntax is for GNU sort.
 

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LEARN ABOUT SUNOS

noecho

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 5.10							    5 Jun 2002							    echo(3XCURSES)
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