sudo mkdir -p /usr/local/libexec/
sudo nano /usr/local/libexec/ramfs-helper
sudo chmod 755 /usr/local/libexec/ramfs-helper
 

#!/bin/sh
 
# 2048000 = 1 Go
# 1024000 = 512 Mo
#  512000 = 256 Mo
#  128000 = 64  Mo
#   64000 = 32  Mo
#   32000 = 16  Mo
 
LOG="/var/log/ramfs.log"
 
while true ; do
 
  /sbin/mount|/usr/bin/grep -E "/private/var/log|/private/tmp"|/usr/bin/wc -l|/usr/bin/grep 2 && break
 
  /sbin/mount|/usr/bin/grep "/private/tmp" >/dev/null 2>&1 || 
   /usr/local/bin/ramfs 1024000 /private/tmp nosuid,nodev,nobrowse,noexec Temp 1777 >>  2>&1
 
  /sbin/mount|/usr/bin/grep "/private/var/log" >/dev/null 2>&1 || 
   /usr/local/bin/ramfs 1024000 /private/var/log nosuid,nodev,nobrowse,noexec VarLog 0755 >>  2>&1
 
  sleep 1
 
done
 
 
if [ "$*" = "-q" ]; then
  /usr/bin/true
  exit 0
fi
 
/bin/sleep 600
 

sudo mkdir -p /usr/local/bin/
sudo nano /usr/local/bin/ramfs
sudo chmod 755 /usr/local/bin/ramfs
 

#!/bin/bash
 
#########################################################################################
#
# ramfs - secureinfo.eu - make a temporary folder in RAM
#
#########################################################################################
 
 
## Variables ############################################################################
 
# Log for this script
LOG="/var/log/$(basename $0).log"
 
NAME="RAM"
MOUNT="/ram"
MODE=0755
 
SIZE=4160000 # 4160000 : 2Go
             # 2080000 : 1Go
             # 1040000 : 512 Mo
             #  570000 : 256 Mo
             #  385000 : 128 Mo
             #  197500 :  64 Mo
 
OPTIONS="noexec,nosuid,nodev,nobrowse"
 
[ ! -z $1 ] && SIZE="$1"
[ ! -z $2 ] && MOUNT="$2"
[ ! -z $3 ] && OPTIONS="$3"
[ ! -z $4 ] && NAME="$4"
[ ! -z $5 ] && MODE="$5"
 
 
## Functions ############################################################################
 
function create_ram_point()
{
  # Get args
  MP="$1"
  RIGHTS_MP="$2"
  OWNER_MP="$3"
  SZ_DST="$4"
  OPTION_MP="$5"
 
  # Prepare log
  /usr/bin/printf "
 
$(date) - RAMfs started [$MP : $SZ_DST]
" >> "$LOG"
  /bin/date >> "$LOG"
 
  # Already created & mounted
  /sbin/mount|grep "$MP" >> "$LOG" && return
 
  # Prepare folder
  /bin/mkdir -v -p $MP >> "$LOG"
 
  # Create new device...
  dev=`/usr/sbin/hdik -drivekey system-image=yes -nomount ram://$SZ_DST` >> "$LOG"
  echo "RAMfs device : $dev" >> "$LOG"
 
  # ...then initialize and mount
  if [ ! -z "$dev" ] ; then
    # Create HFS on the RAM volume.
    /bin/sync ; /sbin/newfs_hfs $dev >> "$LOG"
 
    # Mount the RAM disk to the target mount point.
    /sbin/mount -v -t hfs -o union -o $OPTION_MP $dev $MP >> "$LOG"
 
    # Set owner/group to uid 0 (root/wheel)
    /usr/sbin/chown -v $OWNER_MP $MP >> "$LOG"
  fi
 
  # Check if all is OK
  /sbin/mount -v |grep "$MP" >> "$LOG"
 
  # If hide from user
  if echo "$OPTION_MP"|grep -sq "nobrowse" ; then
    /usr/bin/chflags hidden "$MP"
  fi
 
  # New rights
  /bin/chmod -v $RIGHTS_MP "$MP" >> "$LOG"
}
 
 
## Script ###############################################################################
 
FOUND=0 ; diskutil list|grep -wsq "$NAME" && FOUND=1
 
echo $NAME
 
if [ $FOUND -eq 0 ] ; then
 
  create_ram_point "$MOUNT" $MODE root:wheel $SIZE $OPTIONS
 
else
 
  disk="$(diskutil list|grep "$NAME"|head -n1|/usr/bin/egrep -io "diskd+")"
  mkdir -p "$MOUNT"
  echo $disk
  /sbin/mount -v -t hfs -o union -o $OPTIONS /dev/$disk "$MOUNT" >> "$LOG"
  chmod $MODE $MOUNT
 
fi
 
diskutil rename "$MOUNT" "$NAME"
 
# End of log
/usr/bin/printf "
 
$(date) - RAMfs finished
" >> "$LOG"