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1.solar-system/1.welcome/14.the-historian/index.md

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+---
+type: challenge
+title: "The Historian"
+xp: 75
+duration: 25
+difficulty: 3
+---
+
+# The Historian
+
+> **[INCOMING — Mission Control, Earth]**
+>
+> Cadet, the repo in your working directory contains five commits
+> from a previous mission. We need a historian's eye on it.
+>
+> Two commands today:
+>
+> - `git log --oneline` — compact one-line-per-commit history
+> - `git show <hash>` — show what a commit changed
+>
+> Your script must produce two files:
+>
+> 1. `log.txt` — full one-line log
+> 2. `breach-commit.txt` — short hash of the commit whose message
+>    mentions `BREACH`
+>
+> Hint: pipe the log through `grep BREACH | awk '{print $1}'` to
+> extract the short hash from the matching line.
+>
+> [END TRANSMISSION]
+
+## Your Task
+
+In `starter/starter.sh`, capture the full log and the breach commit's
+short hash.
+
+## Objectives
+
+- `log.txt` lists all 5 commits, one per line
+- `breach-commit.txt` contains the short hash of the BREACH commit