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System : Linux b8009 3.13.0-170-generic #220-Ubuntu SMP Thu May 9 12:40:49 UTC 2019 x86_64
User : www-data ( 33)
PHP Version : 5.5.9-1ubuntu4.29
Disable Function : pcntl_alarm,pcntl_fork,pcntl_waitpid,pcntl_wait,pcntl_wifexited,pcntl_wifstopped,pcntl_wifsignaled,pcntl_wexitstatus,pcntl_wtermsig,pcntl_wstopsig,pcntl_signal,pcntl_signal_dispatch,pcntl_get_last_error,pcntl_strerror,pcntl_sigprocmask,pcntl_sigwaitinfo,pcntl_sigtimedwait,pcntl_exec,pcntl_getpriority,pcntl_setpriority,
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Directory : /usr/lib/upstart/

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Current File : /usr/lib/upstart/migrate-inittab.pl

#!/usr/bin/perl

use strict;
use warnings;

my %gettys;
my $have_cad = 0;


#-----------------------------------------------------------------------------#
# Parse /etc/inittab
#-----------------------------------------------------------------------------#

open INITTAB, "/etc/inittab"
    or die "Unable to open /etc/inittab: $!";

while (<INITTAB>) {
    chomp;
    s/^\s*//;

    next if /^\#/;
    next unless length;

    my ($id, $rlevel, $action, $process) = split /:/, $_, 4;

    warn "missing id field" and next
	unless defined $id and length $id;
    warn "missing runlevel field" and next
	unless defined $rlevel;
    warn "missing action field" and next
	unless defined $action and length $action;
    warn "missing process field" and next
	unless defined $process;


    $have_cad = 1 if $action eq "ctrlaltdel";
    $gettys{$1} = [ $rlevel, $process ]	if $process =~ /getty.*\b(tty\w+)/;
}

close INITTAB
    or warn "Error while closing /etc/inittab: $!";


#-----------------------------------------------------------------------------#
# Alter /etc/event.d
#-----------------------------------------------------------------------------#

unlink "/etc/init/control-alt-delete.conf"
    unless $have_cad;

foreach (qw/tty1 tty2 tty3 tty4 tty5 tty6/) {
    unlink "/etc/init/$_.conf"
	unless exists $gettys{$_};
}

foreach (sort keys %gettys) {
    my ($rlevel, $process) = @{$gettys{$_}};

    my @job;
    if (-f "/etc/event.d/$_") {
	open JOB, "/etc/event.d/$_"
	    or warn "Unable to open /etc/event.d/$_: $!" and next;
	@job = <JOB>;
	chomp @job;
	close JOB
	    or warn "Error while closing /etc/event,d/$_: $!" and next;

	foreach my $rl (qw/2 3 4 5/) {
	    my $idx;
	    for ($idx = 0; $idx < @job; $idx++) {
		last if $job[$idx] =~ /^\s*(start|stop)\s+on\s+runlevel\s+$rl\b/;
	    }

	    if ($idx < @job) {
		if ($rlevel =~ /$rl/) {
		    $job[$idx] =~ s/^(\s*)stop(\s+)/$1start$2/;
		} else {
		    $job[$idx] =~ s/^(\s*)start(\s+)/$1stop$2/;
		}
	    } else {
		if ($rlevel =~ /$rl/) {
		    push @job, "start on runlevel $rl";
		} else {
		    push @job, "stop on runlevel $rl";
		}
	    }
	}

	my $idx;
	for ($idx = 0; $idx < @job; $idx++) {
	    last if $job[$idx] =~ /^\s*respawn\s*/; # match bare 'respawn' too
	}

	if ($idx < @job) {
	    # only match old-style 'respawn process', not bare 'respawn'
	    $job[$idx] =~ s/^(\s*respawn\s+).*/$1$process/;
	} else {
	    push @job, "respawn";
	    push @job, "exec $process";
	}

	# Try to fix up effects of previous broken migrations
	if (@job and $job[$#job] =~ /.*(.+?)exec (\1)$/) {
	    $job[$#job] = "exec $1";
	}

    } else {
	push @job, "# $_ - getty";
	push @job, "#";
	push @job, "# Converted from /etc/inittab entry";
	push @job, "";

	foreach my $rl (qw/2 3 4 5/) {
	    if ($rlevel =~ /$rl/) {
		push @job, "start on runlevel $rl";
	    } else {
		push @job, "stop on runlevel $rl";
	    }
	}
	push @job, "";

	push @job, "stop on shutdown";
	push @job, "";

	push @job, "respawn";
	push @job, "exec $process";
    }

    open JOB, ">/etc/event.d/.$_"
	or warn "Unable to write to /etc/event.d/.$_: $!" and next;
    print JOB map { "$_\n" } @job;
    unless (close JOB) {
	warn "Error while closing /etc/event.d/.$_: $!";
	unlink "/etc/event.d/.$_";
	next;
    }

    unless (rename "/etc/event.d/.$_", "/etc/event.d/$_") {
	warn "Unable to replace /etc/event.d/$_: $!";
	unlink "/etc/event.d/.$_";
	next;
    }
}

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