In `@Shell/Bash/Leetcode/195`. Tenth Line/TenthLine.ipynb:
- Around line 100-380: The document currently presents the incorrect pattern
"head -n 10 | tail -n 1" as 解法2 and only later explains it's wrong, causing
confusion; reorder the sections so the three correct solutions appear first and
the mistaken pattern is explained in a "よくある間違い" section: move the "tail -n +10
| head -n 1" block (currently labeled 解法3) into 解法2, keep "sed -n '10p'
file.txt" as 解法1 and "awk 'NR==10' file.txt" as 解法3, then relocate the
explanatory block about why "head -n 10 | tail -n 1" is wrong into a new "❌ head
-n 10 | tail -n 1 を使ってはいけない理由" subsection after the correct solutions; update
headings "解法2"/"解法3" and any references so ordering and labels match the new
structure.
- Around line 30-33: 各マジックコメント行（例: "# Runtime 23 ms", "# Memory 3.85 MB", "#
Beats 69.41%"
等）が表示されているセルの先頭に、これらのパフォーマンスメトリクスがLeetCode実行環境での計測値であり実環境やファイルサイズで変わる旨の注記を追加してください（該当セルは最初のセルとセルのセットで
"# Runtime ..." が含まれる箇所）。注記は簡潔に「注:
以下のパフォーマンスメトリクスはLeetCode環境での計測値です。実際の性能は環境やファイルサイズによって異なります。」のようにし、同様の注記を行群（該当は行範囲
30-33、47-50、64-67、81-84 に対応するセル）すべてに挿入してください。
- Line 277: セル内の見出しテキストに重複があるため、文字列 "## **正しい解法**## **3つの正しい解法**"
を編集して重複を取り除いてください（例: "## **正しい解法**" または "## **3つの正しい解法**"
のいずれか一方に統一）。該当箇所はノートブックの当該セルの見出しテキストを更新することで修正してください。
- Around line 52-57: The notebook's comment text contradicts the actual command:
the executed command is "tail -n +10 file.txt | head -n 1" but the comment
mistakenly explains "head -n 10 | tail -n 1"; update the commentary to match the
actual command (or change the command to match the comment if you intended the
head+tail approach). Specifically, replace the incorrect lines explaining "head
-n 10 : 最初の10行を取得" and "tail -n 1 : その中から最後の1行(=10行目)を取得" with an explanation
for "tail -n +10 file.txt | head -n 1" (e.g., "tail -n +10: start from line 10
and output to end; head -n 1: take the first of those lines = 10th line") so the
comment matches the command.
- Around line 134-167: The section incorrectly documents the command "head -n 10
file.txt | tail -n 1" as 解法2; replace that entire block with the correct
solution "tail -n +10 file.txt | head -n 1", update the illustrative diagram to
show file.txt → tail -n +10 → head -n 1 (highlighting 10行目が先頭に来る流れ), and change
the numbered steps from using `head -n 10`/`tail -n 1` to `tail -n +10` then
`head -n 1` so the prose, diagram, and example command all match the actual
implementation.
- Line 239: Update the table row that currently contains the string "|
**head+tail** | `head -n 10 \\| tail -n 1` | 直感的 | 2つのプロセスが必要 | 最終行を出力 |":
change the command to the correct solution `tail -n +10 | head -n 1` and update
the "10行未満の動作" column to indicate that it produces no output (instead of
"最終行を出力"); ensure you replace both the displayed command token and the behavior
text in the same row so the comparison is accurate.
- Around line 89-93: 現在のスクリプトの else ブロックで echo ""
を出力しているため、10行未満のファイルで空行を出してしまい仕様違反です。wc -l による事前チェックと else の echo を削除し、代わりに直接
sed -n '10p'（または推奨する別解として awk 'NR==10' や tail -n +10 | head -n
1）を実行するように修正してください—つまり file.txt の行数チェックを廃止し、関数/コマンド参照箇所 sed -n '10p'（あるいは awk
'NR==10'）だけを残して echo "" を削除してください。

In `@Shell/Bash/Leetcode/192`. Word Frequency/WordFrequency.ipynb:
- Around line 356-360: Noted that notebook metadata sets language_info.name =
"python" while this is a Bash tutorial; update the notebook metadata
(metadata.language_info.name) to a bash-appropriate kernel name (e.g., "bash" or
the exact kernel spec you intend) or remove the language_info entry if you
prefer to keep the notebook markdown-only; ensure the kernel spec matches any
future bash code cells by updating metadata.kernelspec.name and
metadata.kernelspec.display_name accordingly so bash cells will execute
correctly.
- Around line 259-262: ストリーム処理の例で使われている curl コマンド ("curl -s
https://example.com/text.txt | tr -s '[:space:]' '\n' | sort | uniq -c | sort
-nr | awk '{print $2, $1}'") は HTTP エラー時にも出力を流してしまう可能性があるため、堅牢性向上のために curl に
-f（および必要なら -s）を追加してください：該当セルの curl コマンドを "curl -sf ..."
のように修正して、HTTPエラー発生時にパイプラインへの不正な入力が流れないようにしてください。
- Around line 20-37: The script lacks a user-friendly check that the input file
(variable input) exists and is readable before running the pipeline (LC_ALL=C tr
... | sort ... | awk ...); add an explicit validation right after input is set
that tests the file (e.g. [ -r "$input" ] or [ -f "$input" ] && [ -r "$input" ])
and, if the check fails, print a clear error message to stderr (using the input
variable for context) and exit with a non-zero status (exit 1) so users get a
helpful message instead of a generic shell failure from set -euo pipefail.
- Around line 346-352: Remove the developer notes block titled "主な改善点：" (the
markdown cell containing items 1–6) from the notebook so end-user documentation
contains only the problem, solution, details and examples; locate the markdown
cell that begins with "主な改善点：" and delete it (and any duplicate "重複セクション"
cells), then verify there are no other internal-refactor notes remaining and
update the notebook's visible sections/TOC if any headings or links referenced
that removed cell.

In `@Shell/Bash/Leetcode/194`. Transpose File/TransposeFile.ipynb:
- Around line 389-445: There are duplicated explanatory sections: the ASCII-art
block starting at the "## 問題の理解" heading and the Mermaid diagram block (the
fenced "```mermaid" sections) both contain the same content ("問題の理解", "入力例の視覚化",
"解法の詳細説明", "パフォーマンス比較と改善点"); remove one duplicate and keep a single canonical
version (either the ASCII diagram or the Mermaid diagram) and update references
accordingly, ensuring the preserved section headings ("## 問題の理解", "入力例の視覚化",
"解法の詳細説明", etc.) remain complete and that only one diagram format (the
"```mermaid" fenced block or the ASCII diagram) is present to avoid redundancy.
- Line 714: The explanatory text stating "この最適化により、上位50-70%のパフォーマンスが期待できます!" is
inconsistent with the actual benchmark shown as "Beats 93.40%"; update that
string to reflect the measured result (e.g.,
"この最適化により、上位約93%のパフォーマンスが期待できます（Beats 93.40%）") by editing the notebook cell
string where that sentence appears so the documentation matches the observed
benchmark.