AWK example to print contents in **```shell** code blocks

gistfile1.sh

#!/bin/sh

awk 'BEGIN{blkline=0; skip=0; }
  $0 ~ /^## EXAMPLE:$/ && blkline == 1 { skip=1; }
  $0 ~ /^```$/ && blkline > 0 {blkline=0;}
  blkline > 0 && skip == 0 {print $0; blkline++; }
  $0 ~ /^```shell$/ && blkline == 0 {blkline=1; skip=0;}
  ' <<'EXAMPLE_MD'
## Title

paragraph

-----

paragraph


```
Skipped to print.
```

    ```shell
    Skipped.
    ```

Skip marker out of code block should not affect with the awk skip flag.

## EXAMPLE:

```shell
which awk ls yes
echo "RUN"
```

```shell
## EXAMPLE:
Also skipped to show here.
```

```shell
echo "RUN"

## EXAMPLE:

Skip marker is ignored.
```

EXAMPLE_MD