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Date:      Sun, 25 Mar 2001 03:48:59 +0200 (CEST)
From:      Leif Neland <leifn@neland.dk>
To:        freebsd-current@freebsd.org
Subject:   rc.conf duplicating defaults/rc.conf
Message-ID:  <Pine.BSF.4.21.0103250337020.1899-100000@arnold.neland.dk>
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Once upon a time, before I knew better, I copied defaults/rc.conf to
rc.conf and edited it to my needs.

Therefore I had many lines in rc.conf which were unnessecary, because 
they just repeated the defaults.

I have thrown together this script, which just outputs the needed lines
in rc.conf.

If VERBOSE is set, it also prints 
##= Is default: Somelabel="somevalue" 
if rc.conf and defaults/rc.conf agree on the value of Somelabel

##- Default: Somelabel="defaultvalue"
if rc.conf and defaults/rc.conf disagree on the value of Somelabel.

Btw, why can't I run this as a bang-script?

Typing ./defcheck just produces:
awk: cmd. line 1: ./defcheck
awk: cmd. line 1: ^ syntax error

 - - - - filename: defcheck
#!/usr/bin/awk
########################################################
#
# Quick hack to check if rc.conf unnessecary duplicate
# lines in defaults/rc.conf
#
# Assume all lines are in format label="value"
#
# Prints lines in rc.conf which are not in defaults/rc.conf
# If VERBOSE==1 below, also prints defaults.
#
# usage:
#   cd /etc; awk -f defcheck
#
# Other files in defaults may be checked:
#   cd /etc; awk -f defcheck -v CHECK=otherfile.conf
#
# Leif Neland
# leif@neland.dk
# 25.marts.2001
#
BEGIN {
  if (CHECK=="") {
    CHECK="rc.conf"
  }
  VERBOSE=0;
  ### Read defaults into array
  DEFAULT="defaults/"CHECK;
  FS="#"; 
  while (getline <DEFAULT >0) {
    m=split($1,a,"\"");
    if (m==3) {linie[sprintf("%s\"%s\"",a[1],a[2])]=1;
      default[a[1]]=a[2];}
  }

######################################################
  while (getline <CHECK >0)
  {
    flag=1;
    m=split($1,a,"\"");
    if (m==3) {l=sprintf("%s\"%s\"",a[1],a[2]);
      if (l in linie) {
        if (VERBOSE) print "##= Is default: ",l;
        flag=0;
      } else {
      if (VERBOSE && a[1] in default) {print "##- Default "a[1]"\""default[a[1]]"\""};
      }
    }
    if (flag) {print};
  }
}



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