This script redirects the output of a hexdump to a text file and then loops through it printing out rows. There are exactly 374371 rows of data in the file that look like this:

```
1a 03 1a 03 4a 03 57 03
4b 03 44 03 1e 03 09 04
10 03 19 03 40 03 ae 03
1e 03 26 03 33 03 ad 03
10 03 84 03 43 03 62 03

```

Here is the script:

```
if [ ! -d ./temp ]; then
  mkdir ./temp
  mount -t tmpfs -o size=128m tmpfs ./temp

  if [[ -s ./temp/samples.txt || ! -f ./temp/samples.txt ]]; then
    hexdump -e '8/1 "%02x " "\n"' samples.bin > ./temp/samples.txt
    echo "              ch0    ch1    ch2    ch3"
    x=0
    while read line;do
      echo "Sample "$x":        "$(echo $line | awk '{print "0x"$1$2"  0x"$3$4"  0x"$5$6"  0x"$7$8}')
      x=$((x+1))
    done<./temp/samples.txt
  fi
  umount ./temp
  rm -Rf ./temp
fi

```

The output looks like:

```
                ch0    ch1    ch2    ch3
Sample 0:       0x1a03 0x1a03 0x4a03 0x5703
Sample 1:       0x4b03 0x4403 0x1e03 0x0904
Sample 2:       0x1003 0x1903 0x4003 0xae03
Sample 3:       0x1e03 0x2603 0x3303 0xad03
Sample 4:       0x1003 0x8403 0x4303 0x6203
Sample 5:       0xe003 0x1603 0x3403 0xc403
Sample 6:       0xf802 0x3b03 0x5303 0x6103
Sample 7:       0x1003 0x1503 0x4203 0x5803
Sample 8:       0x2303 0x1f03 0x5703 0x6203
Sample 9:       0x1703 0x7303 0x3103 0x3303
Sample 10:      0x1403 0xff02 0x3003 0x5103
Sample 11:      0x5f03 0x4203 0x4703 0x7e03
Sample 12:      0xba03 0x2603 0x3503 0xa003

```

Even with tmpfs, the script doesn't run any faster than just reading from disk. Is there a way to make this script run any faster?