The typo is on line 2 of notes.txt itself; the workspace contains no other file. Inspect it with the bash tool: run exactly `cat notes.txt` (relative path, no other command; plan mode keeps the sandbox read-only, and a plain cat succeeds). Then present a one-step plan titled '# Fix the greeting typo' via exit_plan_mode: the single step is editing line 2 of notes.txt to say hello world. Do not edit anything before the review approves. After it approves, apply exactly that one edit to notes.txt with the edit tool and stop — no other commands, do not look for any other file.


System: {{system}}


The


user


wants


me


to


Run


cat


notes


.txt


inspect


the


file


Present


a


plan


fix


typ


o


After


approval


edit


line


to


say


hello


world


Let


me


start


with


step


The user wants me to:
1. Run `cat notes.txt` to inspect the file
2. Present a plan to fix the typo
3. After approval, edit line 2 to say "hello world"

Let me start with step 1.


bash

Inspect notes.txt


project notes
- the greeting message still says "helo wrld"


Line


shows


the


greeting


message


still


says


hel


o


wr


ld


The


user


typ


is


on


line


of


notes


.txt


itself


So


the


content


greeting


message


still


says


hel


o


wr


ld


and


fix


is


to


change


it


say


hello


world


Wait


but


the


user


says


ed


iting


line


of


notes


.txt


to


Let


me


re


-read


Actually


single


step


is


editing


say


hello


world


So


they


want


replace


line


with


Let


me


present


the


plan


The


file


contains


two


lines


is


greeting


message


still


says


hel


o


wr


ld


straightforward


Line 2 shows: `- the greeting message still says "helo wrld"`

The user says the typo is on line 2 of notes.txt itself. So line 2 is the content `- the greeting message still says "helo wrld"` and the fix is to change it to say "hello world".

Wait, but the user says "editing line 2 of notes.txt to say hello world." Let me re-read.

Actually, the user says: "the single step is editing line 2 of notes.txt to say hello world." So they want me to replace line 2 with "hello world".

Let me present the plan.


The file contains two lines; line 2 is `- the greeting message still says "helo wrld"`. The plan is straightforward.


# Fix the greeting typo

**Step 1:** Edit `notes.txt` — replace line 2 (`- the greeting message still says "helo wrld"`) with `hello world`.


Plan approved — plan mode exited; carry out the plan starting with your next step.


Plan


approved


Now


I


apply


the


edit


need


to


replace


line


of


notes


.txt


with


hello


world


The


current


content


is


greeting


message


still


says


hel


o


wr


ld


Let


me


use


the


edit


tool


to


replace


it


Plan approved. Now I apply the edit. I need to replace line 2 of notes.txt with "hello world". The current content of line 2 is `- the greeting message still says "helo wrld"`. Let me use the edit tool to replace it.


edit

- the greeting message still says "helo wrld"


Error: edit requires reading "/var/folders/2g/b32ct0qn1d728l_v6tdkjytr0000gn/T/acp-snap-cwd-TBMl70/notes.txt" first


I


need


read


file


first


before


editing


Let


me


I need to read the file first before editing. Let me read it.


<path>/var/folders/2g/b32ct0qn1d728l_v6tdkjytr0000gn/T/acp-snap-cwd-TBMl70/notes.txt</path>
<type>file</type>
<content>
1: project notes
2: - the greeting message still says "helo wrld"

(End of file - total 2 lines)
</content>


Now


can


apply


the


edit


Now I can apply the edit.


The file /var/folders/2g/b32ct0qn1d728l_v6tdkjytr0000gn/T/acp-snap-cwd-TBMl70/notes.txt has been updated successfully.

project notes
- the greeting message still says "helo wrld"


Done


The


was


applied


successfully


Line


of


notes


.txt


now


reads


hello


world


is


done


Done. The edit was applied successfully.


Line 2 of `notes.txt` now reads `hello world`. The edit is done.


Read notes.txt (relative path notes.txt) and reply with the single word DONE if line 2 now says hello world.


The


user


wants


me


to


read


notes


.txt


and


check


if


line


says


hello


world


If


so


reply


with


just


D


ONE


The user wants me to read notes.txt and check if line 2 says "hello world". If so, reply with just "DONE".


<path>/var/folders/2g/b32ct0qn1d728l_v6tdkjytr0000gn/T/acp-snap-cwd-TBMl70/notes.txt</path>
<type>file</type>
<content>
1: project notes
2: hello world

(End of file - total 2 lines)
</content>


Line


as


required


Line 2 says "hello world" as required.


DONE


Line 2 says "hello world" as required.

DONE