add fc

Examples.md

@@ -180,6 +180,17 @@ fshow() {
 }
 ```
 
+```sh
+# fc - get git commit sha
+# example usage: git rebase -i `fc`
+fc() {
+  local commits commit
+  commits=$(git log --color=always --pretty=oneline --abbrev-commit --reverse) &&
+  commit=$(echo "$commits" | fzf --tac +s +m -e --ansi --reverse) &&
+  echo -n $(echo "$commit" | sed "s/ .*//")
+}
+```
+
 ### Tags
 
 ```sh