apt-get remove apache2

apt-get install apache2

apt-get remove --purge apache2

apt-get remove php5 php5-pgsql php5-dev php-pear

  
apt-get install php5 php5-pgsql php5-dev php-pear

apt-get remove libapache2-mod-php5 apache2-dev

apt-get install libapache2-mod-php5 apache2-dev

#!/bin/sh
### BEGIN INIT INFO
# Provides:          apache2
# Required-Start:    $local_fs $remote_fs $network $syslog $named
# Required-Stop:     $local_fs $remote_fs $network $syslog $named
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# X-Interactive:     true
# Short-Description: Start/stop apache2 web server
### END INIT INFO

set -e

SCRIPTNAME="${0##*/}"
SCRIPTNAME="${SCRIPTNAME##[KS][0-9][0-9]}"
if [ -n "$APACHE_CONFDIR" ] ; then
   if [ "${APACHE_CONFDIR##/etc/apache2-}" != "${APACHE_CONFDIR}" ] ; then
      DIR_SUFFIX="${APACHE_CONFDIR##/etc/apache2-}"
   else
      DIR_SUFFIX=
   fi
elif [ "${SCRIPTNAME##apache2-}" != "$SCRIPTNAME" ] ; then
   DIR_SUFFIX="-${SCRIPTNAME##apache2-}"
   APACHE_CONFDIR=/etc/apache2$DIR_SUFFIX
else
   DIR_SUFFIX=
   APACHE_CONFDIR=/etc/apache2
fi
if [ -z "$APACHE_ENVVARS" ] ; then
   APACHE_ENVVARS=$APACHE_CONFDIR/envvars
fi
export APACHE_CONFDIR APACHE_ENVVARS

ENV="env -i LANG=C PATH=/usr/local/bin:/usr/bin:/bin"
if [ "$APACHE_CONFDIR" != /etc/apache2 ] ; then
   ENV="$ENV APACHE_CONFDIR=$APACHE_CONFDIR"
fi
if [ "$APACHE_ENVVARS" != "$APACHE_CONFDIR/envvars" ] ; then
   ENV="$ENV APACHE_ENVVARS=$APACHE_ENVVARS"
fi


#edit /etc/default/apache2 to change this.
HTCACHECLEAN_RUN=auto
HTCACHECLEAN_MODE=daemon
HTCACHECLEAN_SIZE=300M
HTCACHECLEAN_DAEMON_INTERVAL=120
HTCACHECLEAN_PATH=/var/cache/apache2$DIR_SUFFIX/mod_disk_cache
HTCACHECLEAN_OPTIONS=""

APACHE_HTTPD=$(. $APACHE_ENVVARS && echo $APACHE_HTTPD)
if [ -z "$APACHE_HTTPD" ] ; then
   APACHE_HTTPD=/usr/sbin/apache2
fi
if [ ! -x $APACHE_HTTPD ] ; then
   echo "No apache MPM package installed"
   exit 0
fi

. /lib/lsb/init-functions

test -f /etc/default/rcS && . /etc/default/rcS

if [ -f /etc/default/apache2$DIR_SUFFIX ] ; then
   . /etc/default/apache2$DIR_SUFFIX
elif [ -f /etc/default/apache2 ] ; then
   . /etc/default/apache2
fi

APACHE2CTL="$ENV /usr/sbin/apache2ctl"
HTCACHECLEAN="$ENV /usr/sbin/htcacheclean"

PIDFILE=$(. $APACHE_ENVVARS && echo $APACHE_PID_FILE)
if [ -z "$PIDFILE" ] ; then
   echo ERROR: APACHE_PID_FILE needs to be defined in $APACHE_ENVVARS >&2
   exit 2
fi


check_htcacheclean() {
   [ "$HTCACHECLEAN_MODE" = "daemon" ] || return 1

   [ "$HTCACHECLEAN_RUN"  = "yes"    ] && return 0

   MODSDIR=$(. $APACHE_ENVVARS && echo $APACHE_MODS_ENABLED)
   [ "$HTCACHECLEAN_RUN"  = "auto" \
     -a -e ${MODSDIR:-$APACHE_CONFDIR/mods-enabled}/disk_cache.load ] && \
      return 0
   
   return 1
}

start_htcacheclean() {
   if [ ! -d "$HTCACHECLEAN_PATH" ] ; then
      echo "... directory $HTCACHECLEAN_PATH does not exist!" >&2
      return 1
   fi   
   $HTCACHECLEAN $HTCACHECLEAN_OPTIONS -d$HTCACHECLEAN_DAEMON_INTERVAL \
         -i -p$HTCACHECLEAN_PATH -l$HTCACHECLEAN_SIZE
}

stop_htcacheclean() {
   pkill -P 1 -f "htcacheclean.* -p$HTCACHECLEAN_PATH " 2> /dev/null || echo ...not running
}

pidof_apache() {
   # if there is actually an apache2 process whose pid is in PIDFILE,
   # print it and return 0.
   if [ -e "$PIDFILE" ]; then
      if pidof apache2 | tr ' ' '\n' | grep -w $(cat $PIDFILE); then
         return 0
      fi
   fi
   return 1
}

apache_stop() {
   if $APACHE2CTL configtest > /dev/null 2>&1; then
      # if the config is ok than we just stop normaly
                $APACHE2CTL stop 2>&1 | grep -v 'not running' >&2 || true
   else
      # if we are here something is broken and we need to try
      # to exit as nice and clean as possible
      PID=$(pidof_apache) || true

      if [ "${PID}" ]; then
         # in this case it is everything nice and dandy and we kill apache2
         echo
         log_warning_msg "The apache2$DIR_SUFFIX configtest failed, so we are trying to kill it manually. This is almost certainly suboptimal, so please make sure your system is working as you'd expect now!"
                        kill $PID
      elif [ "$(pidof apache2)" ]; then
         if [ "$VERBOSE" != no ]; then
                                echo " ... failed!"
                 echo "You may still have some apache2 processes running.  There are"
                 echo "processes named 'apache2' which do not match your pid file,"
                 echo "and in the name of safety, we've left them alone.  Please review"
                 echo "the situation by hand."
                        fi
                        return 1
      fi
   fi
}

apache_wait_stop() {
   # running ?
   PIDTMP=$(pidof_apache) || true
   if kill -0 "${PIDTMP:-}" 2> /dev/null; then
       PID=$PIDTMP
   fi

   apache_stop

   # wait until really stopped
   if [ -n "${PID:-}" ]; then
      i=0
      while kill -0 "${PID:-}" 2> /dev/null;  do
              if [ $i = '60' ]; then
                 break;
               else
                 if [ $i = '0' ]; then
                         echo -n " ... waiting "
                 else
                               echo -n "."
                  fi
                 i=$(($i+1))
                 sleep 1
                 fi
       done
   fi
}

case $1 in
   start)
      log_daemon_msg "Starting web server" "apache2"
      if $APACHE2CTL start; then
         if check_htcacheclean ; then
            log_progress_msg htcacheclean
            start_htcacheclean || log_end_msg 1
         fi
                        log_end_msg 0
                else
                        log_end_msg 1
                fi
   ;;
   stop)
      if check_htcacheclean ; then
         log_daemon_msg "Stopping web server" "htcacheclean"
         stop_htcacheclean
         log_progress_msg "apache2"
      else
         log_daemon_msg "Stopping web server" "apache2"
      fi
      if apache_wait_stop; then
                        log_end_msg 0
                else
                        log_end_msg 1
                fi
   ;;
   graceful-stop)
      if check_htcacheclean ; then
         log_daemon_msg "Stopping web server" "htcacheclean"
         stop_htcacheclean
         log_progress_msg "apache2"
      else
         log_daemon_msg "Stopping web server" "apache2"
      fi
      if $APACHE2CTL graceful-stop; then
                        log_end_msg 0
                else
                        log_end_msg 1
                fi
   ;;
   reload | force-reload | graceful)
      if ! $APACHE2CTL configtest > /dev/null 2>&1; then
                    $APACHE2CTL configtest || true
                    log_end_msg 1
                    exit 1
                fi
                log_daemon_msg "Reloading web server config" "apache2"
      if pidof_apache > /dev/null ; then
                    if $APACHE2CTL graceful $2 ; then
                        log_end_msg 0
                    else
                        log_end_msg 1
                    fi
                fi
   ;;
   restart)
      if ! $APACHE2CTL configtest > /dev/null 2>&1; then
          $APACHE2CTL configtest || true
          log_end_msg 1
          exit 1
      fi
      if check_htcacheclean ; then
         log_daemon_msg "Restarting web server" "htcacheclean"
         stop_htcacheclean
         log_progress_msg apache2
      else
         log_daemon_msg "Restarting web server" "apache2"
      fi
      PID=$(pidof_apache) || true
      if ! apache_wait_stop; then
                        log_end_msg 1 || true
                fi
      if $APACHE2CTL start; then
         if check_htcacheclean ; then
            start_htcacheclean || log_end_msg 1
         fi
                        log_end_msg 0
                else
                        log_end_msg 1
                fi
   ;;
   start-htcacheclean)
      log_daemon_msg "Starting htcacheclean"
      start_htcacheclean || log_end_msg 1
      log_end_msg 0
   ;;
   stop-htcacheclean)
      log_daemon_msg "Stopping htcacheclean"
         stop_htcacheclean
         log_end_msg 0
   ;;
   status)
      PID=$(pidof_apache) || true
      if [ -n "$PID" ]; then
         echo "Apache2$DIR_SUFFIX is running (pid $PID)."
         exit 0
      else
         echo "Apache2$DIR_SUFFIX is NOT running."
         if [ -e "$PIDFILE" ]; then
            exit 1
         else
            exit 3
         fi
      fi
   ;;
   *)
      log_success_msg "Usage: /etc/init.d/apache2$DIR_SUFFIX {start|stop|graceful-stop|restart|reload|force-reload|start-htcacheclean|stop-htcacheclean|status}"
      exit 1
   ;;
esac

# envvars - default environment variables for apache2ctl

# this won't be correct after changing uid
unset HOME

# for supporting multiple apache2 instances
if [ "${APACHE_CONFDIR##/etc/apache2-}" != "${APACHE_CONFDIR}" ] ; then
   SUFFIX="-${APACHE_CONFDIR##/etc/apache2-}"
else
   SUFFIX=
fi

# Since there is no sane way to get the parsed apache2 config in scripts, some
# settings are defined via environment variables and then used in apache2ctl,
# /etc/init.d/apache2, /etc/logrotate.d/apache2, etc.
export APACHE_RUN_USER=www-data
export APACHE_RUN_GROUP=www-data
export APACHE_PID_FILE=/var/run/apache2$SUFFIX.pid
export APACHE_RUN_DIR=/var/run/apache2$SUFFIX
export APACHE_LOCK_DIR=/var/lock/apache2$SUFFIX
# Only /var/log/apache2 is handled by /etc/logrotate.d/apache2.
export APACHE_LOG_DIR=/var/log/apache2$SUFFIX

## The locale used by some modules like mod_dav
export LANG=C
## Uncomment the following line to use the system default locale instead:
#. /etc/default/locale

export LANG

## The command to get the status for 'apache2ctl status'.
## Some packages providing 'www-browser' need '--dump' instead of '-dump'.
#export APACHE_LYNX='www-browser -dump'

## If you need a higher file descriptor limit, uncomment and adjust the
## following line (default is 8192):
#APACHE_ULIMIT_MAX_FILES='ulimit -n 65536'