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diff --git a/examples/common.h b/examples/common.h
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@@ -0,0 +1,136 @@
+/*
+ * Utilities library for libgit2 examples
+ *
+ * Written by the libgit2 contributors
+ *
+ * To the extent possible under law, the author(s) have dedicated all copyright
+ * and related and neighboring rights to this software to the public domain
+ * worldwide. This software is distributed without any warranty.
+ *
+ * You should have received a copy of the CC0 Public Domain Dedication along
+ * with this software. If not, see
+ * <http://creativecommons.org/publicdomain/zero/1.0/>.
+ */
+#ifndef INCLUDE_examples_common_h__
+#define INCLUDE_examples_common_h__
+
+#include <assert.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <git2.h>
+#include <fcntl.h>
+
+#ifdef _WIN32
+# include <io.h>
+# include <Windows.h>
+# define open _open
+# define read _read
+# define close _close
+# define ssize_t int
+# define sleep(a) Sleep(a * 1000)
+#else
+# include <unistd.h>
+#endif
+
+#ifndef PRIuZ
+/* Define the printf format specifier to use for size_t output */
+#if defined(_MSC_VER) || defined(__MINGW32__)
+#	define PRIuZ "Iu"
+#else
+#	define PRIuZ "zu"
+#endif
+#endif
+
+#ifdef _MSC_VER
+#define snprintf _snprintf
+#define strcasecmp strcmpi
+#endif
+
+#define ARRAY_SIZE(x) (sizeof(x)/sizeof(*x))
+#define UNUSED(x) (void)(x)
+
+#include "args.h"
+
+extern int lg2_add(git_repository *repo, int argc, char **argv);
+extern int lg2_blame(git_repository *repo, int argc, char **argv);
+extern int lg2_cat_file(git_repository *repo, int argc, char **argv);
+extern int lg2_checkout(git_repository *repo, int argc, char **argv);
+extern int lg2_clone(git_repository *repo, int argc, char **argv);
+extern int lg2_commit(git_repository *repo, int argc, char **argv);
+extern int lg2_config(git_repository *repo, int argc, char **argv);
+extern int lg2_describe(git_repository *repo, int argc, char **argv);
+extern int lg2_diff(git_repository *repo, int argc, char **argv);
+extern int lg2_fetch(git_repository *repo, int argc, char **argv);
+extern int lg2_for_each_ref(git_repository *repo, int argc, char **argv);
+extern int lg2_general(git_repository *repo, int argc, char **argv);
+extern int lg2_index_pack(git_repository *repo, int argc, char **argv);
+extern int lg2_init(git_repository *repo, int argc, char **argv);
+extern int lg2_log(git_repository *repo, int argc, char **argv);
+extern int lg2_ls_files(git_repository *repo, int argc, char **argv);
+extern int lg2_ls_remote(git_repository *repo, int argc, char **argv);
+extern int lg2_merge(git_repository *repo, int argc, char **argv);
+extern int lg2_push(git_repository *repo, int argc, char **argv);
+extern int lg2_remote(git_repository *repo, int argc, char **argv);
+extern int lg2_rev_list(git_repository *repo, int argc, char **argv);
+extern int lg2_rev_parse(git_repository *repo, int argc, char **argv);
+extern int lg2_show_index(git_repository *repo, int argc, char **argv);
+extern int lg2_stash(git_repository *repo, int argc, char **argv);
+extern int lg2_status(git_repository *repo, int argc, char **argv);
+extern int lg2_tag(git_repository *repo, int argc, char **argv);
+
+/**
+ * Check libgit2 error code, printing error to stderr on failure and
+ * exiting the program.
+ */
+extern void check_lg2(int error, const char *message, const char *extra);
+
+/**
+ * Read a file into a buffer
+ *
+ * @param path The path to the file that shall be read
+ * @return NUL-terminated buffer if the file was successfully read, NULL-pointer otherwise
+ */
+extern char *read_file(const char *path);
+
+/**
+ * Exit the program, printing error to stderr
+ */
+extern void fatal(const char *message, const char *extra);
+
+/**
+ * Basic output function for plain text diff output
+ * Pass `FILE*` such as `stdout` or `stderr` as payload (or NULL == `stdout`)
+ */
+extern int diff_output(
+	const git_diff_delta*, const git_diff_hunk*, const git_diff_line*, void*);
+
+/**
+ * Convert a treeish argument to an actual tree; this will call check_lg2
+ * and exit the program if `treeish` cannot be resolved to a tree
+ */
+extern void treeish_to_tree(
+	git_tree **out, git_repository *repo, const char *treeish);
+
+/**
+ * A realloc that exits on failure
+ */
+extern void *xrealloc(void *oldp, size_t newsz);
+
+/**
+ * Convert a refish to an annotated commit.
+ */
+extern int resolve_refish(git_annotated_commit **commit, git_repository *repo, const char *refish);
+
+/**
+ * Acquire credentials via command line
+ */
+extern int cred_acquire_cb(git_credential **out,
+		const char *url,
+		const char *username_from_url,
+		unsigned int allowed_types,
+		void *payload);
+
+#endif