OK here I'm again with regex and matching - but it's so strange I regarded suitable to open a new thread. To make it short: pattern matching works with variable and some lines down - all of a sudden - not. Even quotemeta doesn't mitigate the problem. Here comes a part of the code:

# some declarations in the beginnings
  my $TAB                 =   "\t";
  my $SPACE               =   " ";
  my $oidNbrSysDescr      =   ".1.3.6.1.2.1.1.1";
  my $prefixSysDescr      =   quotemeta 'system.sysDescr.0 : DISPLAY S
+TRING- (ascii):  ';
  #my $prefixSnmpWalk      =   'snmpwalk:\s*'; # no use ??

...
foreach $hostName (@serverList) {

    # snmpwalk as filehandle
    #----------------------------------
    $FH_SNMPWALK = new FileHandle "$SNMPWALK $hostName $oidNbrSysDescr
+ 2>&1|";
    die "$0: $! in Zeile: ", __LINE__ unless defined $FH_SNMPWALK;

    # execute snmpwalk 
    #----------------------------------
    while( $sysDescr = <$FH_SNMPWALK> ) {
      chomp $sysDescr;

      for ( $sysDescr ) {

         /$prefixSysDescr/ && do {
            s/$prefixSysDescr/$hostName$TAB/;
            $OutputLine = $_;
            last;
         }; # substitute some prefixes (this one works)

         /snmpwalk:\s*/  && do {
            s/snmpwalk:\s*/$hostName$TAB/;
            $OutputLine = $_;
            last;
         }; # error messages starting with "snmpwalk:  "
            # here is the problem. All of a sudden I coudln't
            # use $prefixSnmpWalk anymore. Even quotemeta
            # failed

         $OutputLine = $OutputLine . $SPACE . $_;

      } # process output

    } # get system description with snmpwalk

    push( @{$serverSystemDescription{$hostName}}, $OutputLine );

    # snmpwalk finished
    #----------------------------------
    close $FH_SNMPWALK;
    die "$0: $! in Zeile: ", __LINE__ unless defined $FH_SNMPWALK;

  } # get system description of each host and put it in to a array
...

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any ideas ? Thx

In reply to His strangeness regex by o_chfa

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