Add cmd-all-commits.sh

A script to rebase onto a commit, and run a command on each commit until reaching the tip.

Any files that get created as a result of the command will be added as fixup! commits.

scripts/cmd-all-commits.sh

@@ -0,0 +1,35 @@
+#!/bin/bash
+
+# Check if enough arguments are provided
+if [ "$#" -ne 2 ]; then
+    echo "Usage: $0 \"<command-to-run>\" <commit-hash>"
+    exit 1
+fi
+
+COMMAND_TO_RUN="$1"
+TARGET_COMMIT="$2"
+
+# Start the interactive rebase with an inline function definition
+GIT_SEQUENCE_EDITOR=: git rebase -i --exec "bash -c ' \
+    COMMAND_TO_RUN=\"$COMMAND_TO_RUN\"; \
+    run_command_and_check() { \
+        eval \"\$COMMAND_TO_RUN\"; \
+        COMMAND_EXIT_STATUS=\$?; \
+        if [ \$COMMAND_EXIT_STATUS -ne 0 ]; then \
+            echo \"Command failed with exit status \$COMMAND_EXIT_STATUS\"; \
+            exit \$COMMAND_EXIT_STATUS; \
+        fi; \
+        if [ -n \"\$(git status --porcelain)\" ]; then \
+            git add .; \
+            git commit --fixup HEAD; \
+        fi; \
+    }; \
+    run_command_and_check' \
+" $TARGET_COMMIT
+
+if [ $? -ne 0 ]; then
+    echo "Rebase encountered an error. Resolve conflicts/errors and continue with 'git rebase --continue'."
+    exit 1
+fi
+
+echo "Rebase completed successfully."