Script to backup stashes in a git repository

backup-git-stashes.md

Usage

find . -name '.git' | xargs dirname | xargs -P 4 -n 1 -I % ./backup-stashes.sh % /tmp/stash-backups

Note

Much of the code is generated by Claude Sonnet 3.5. Exercise caution by going through it before executing.

backup-stashes.sh

#!/bin/bash

# Check if correct number of arguments is provided
if [ $# -ne 2 ]; then
    echo "Usage: $0 <git-repo-path> <parent-directory>"
    exit 1
fi

REPO_PATH="$1"
PARENT_DIR="$2"

# Get the source directory name
REPO_NAME=$(basename "$REPO_PATH")
TARGET_DIR="$PARENT_DIR/$REPO_NAME"

# Check if repository path exists and is a git repository
if [ ! -d "$REPO_PATH/.git" ]; then
    echo "Error: $REPO_PATH is not a git repository"
    exit 1
fi

# Check if parent directory exists
if [ ! -d "$PARENT_DIR" ]; then
    echo "Error: Parent directory $PARENT_DIR does not exist"
    exit 1
fi

# Check if target directory already exists
if [ -d "$TARGET_DIR" ]; then
    echo "Error: Target directory $TARGET_DIR already exists"
    exit 1
fi

# Change to repository directory
cd "$REPO_PATH" || exit 1

# Create temporary file for stash list
TEMP_FILE=$(mktemp)
git stash list > "$TEMP_FILE"

# Check if there are any stashes
if [ ! -s "$TEMP_FILE" ]; then
    echo "No stashes found in repository"
    rm "$TEMP_FILE"
    exit 0
fi

# Create target directory only if we have stashes
mkdir -p "$TARGET_DIR"

# Move stash list to final location
mv "$TEMP_FILE" "$TARGET_DIR/index.txt"

# Counter for stash number
counter=0

# Loop through each stash
while IFS= read -r stash; do
    # Create diff file for each stash
    git stash show -p "stash@{$counter}" > "$TARGET_DIR/$counter"
    
    # Check if diff creation was successful
    if [ $? -ne 0 ]; then
        echo "Error: Failed to create diff for stash $counter"
        continue
    fi
    
    # Increment counter
    ((counter++))
done < "$TARGET_DIR/index.txt"

echo "Successfully backed up $counter stash(es) to $TARGET_DIR"