diff --git a/.gitignore b/.gitignore
index edc82d6..1f4e0d8 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,4 +3,9 @@ __pycache__
 tags
 *.pyc
 make-*
-src
+src/*
+!src/g
+!src/e
+!src/st
+!src/s
+!src/README
diff --git a/src/README b/src/README
new file mode 100644
index 0000000..4444824
--- /dev/null
+++ b/src/README
@@ -0,0 +1,129 @@
+This dir is intended to keep all the git clones.
+
+There are some handy scripts I use for my daily Osmocom development:
+
+ ./g   run a git command in each source tree
+ ./e   run an arbitrary shell command in each source tree
+ ./st  show a brief branch and local mods status for each source tree
+ ./s   walk through each source tree and use gitk as well as user interaction
+       to quickly fast-forward / reset changes coming in from upstream. (This
+       is potentially dangerous, but safe if you only hit enter every time.)
+
+Examples:
+
+-----------------------------------------------------------------------------
+
+./g fetch    # run 'git fetch' in each clone = fetch all from upstream
+
+===== libasn1c =====
+remote: Counting objects: 29, done
+remote: Finding sources: 100% (26/26)
+remote: Total 26 (delta 8), reused 22 (delta 8)
+Unpacking objects: 100% (26/26), done.
+From ssh://go/libasn1c
+   4151e59..aaae8c7  master     -> origin/master
+
+===== libosmo-abis =====
+
+===== libosmo-netif =====
+remote: Counting objects: 105, done
+remote: Finding sources: 100% (92/92)
+remote: Total 92 (delta 54), reused 92 (delta 54)
+Unpacking objects: 100% (92/92), done.
+From ssh://go/libosmo-netif
+   6032a35..e786055  master     -> origin/master
+ + 058d3b7...89180ef pespin/jitterbuffer -> origin/pespin/jitterbuffer  (forced update)
+ * [new branch]      pespin/osmux-lostpkt -> origin/pespin/osmux-lostpkt
+
+===== libosmo-sccp =====
+
+===== libosmocore =====
+remote: Counting objects: 36, done
+remote: Finding sources: 100% (24/24)
+remote: Total 24 (delta 18), reused 24 (delta 18)
+Unpacking objects: 100% (24/24), done.
+From ssh://go/libosmocore
+   4a29f34..733810c  master     -> origin/master
+
+[...]
+
+-----------------------------------------------------------------------------
+
+./st         # any modifications / updates? (e.g. useful after './g fetch')
+             # (checks only 'master' and the current checked-out branch)
+
+     libasn1c master
+ libosmo-abis master
+libosmo-netif master
+ libosmo-sccp MODS master[+1|-10]
+  libosmocore master
+    libsmpp34 master
+     openggsn master
+     osmo-bsc pre_release[+43|-43]
+     osmo-hlr master
+     osmo-iuh pre_release[+1]
+     osmo-mgw pre_release
+     osmo-msc pre_release
+    osmo-sgsn pre_release
+
+# This shows me that I have local mods in libosmo-sccp, while my local master
+# branch has one commit that isn't on upstream ("+1"); but at the same time
+# origin/master has moved on by 10 commits ("-10").
+# My osmo-bsc git is on branch 'pre_release', and apparently I have amended the
+# 44th commit before pre_release's HEAD.
+# And on osmo-iuh, I have one un-pushed local commit.
+
+-----------------------------------------------------------------------------
+
+./e rm .version  # in each source tree, remove the local .version file
+
+-----------------------------------------------------------------------------
+
+./s         # interactively try to fast-forward to upstream and/or save
+            # local modifications.
+            # If you just hit Enter all the time, nothing will be changed.
+
+
+libosmocore
+master
+Your branch is behind 'origin/master' by 2 commits, and can be fast-forwarded.
+Behind. git merge?  (empty = no, 'ok' = yes)
+ok                   # <-- type 'ok' and hit enter
+git merge
+Updating ff932bb..4a29f34
+Fast-forward
+ include/osmocom/gprs/gprs_rlc.h | 25 +++++++++++++++++++
+ include/osmocom/gsm/tlv.h       | 21 +++++++++++++++-
+ src/gsm/gprs_rlc.c              | 90 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+ src/gsm/libosmogsm.map          |  6 +++++
+ 4 files changed, 141 insertions(+), 1 deletion(-)
+
+
+libosmo-netif
+master
+Your branch is up-to-date with 'origin/master'.
+
+
+libosmo-sccp
+master
+Your branch and 'origin/master' have diverged,
+Diverged. git reset --hard origin/master ?  (empty = no, 'ok' = yes)
+# a 'gitk' opens; just hit 'enter' to keep local diverged commits.
+# If you type 'ok', local mods are saved to a wip branch first.
+
+Local mods
+  modified:   src/osmo_ss7_vty.c
+
+commit to new branch? (enter name, empty = no)
+
+commit to this branch master ?  (empty = no, 'ok' = yes)
+
+[...]
+
+-----------------------------------------------------------------------------
+
+
+Enjoy,
+
+~Neels
+<nhofmeyr@sysmocom.de>
diff --git a/src/e b/src/e
new file mode 100755
index 0000000..6606a90
--- /dev/null
+++ b/src/e
@@ -0,0 +1,10 @@
+#!/bin/sh
+base="$PWD"
+for gitdir in */.git ; do
+  cd "$base"
+  dir="$(dirname "$gitdir")"
+  echo
+  echo "===== $dir ====="
+  cd "$dir"
+  $@
+done
diff --git a/src/g b/src/g
new file mode 100755
index 0000000..ed30489
--- /dev/null
+++ b/src/g
@@ -0,0 +1,7 @@
+#!/bin/sh
+for gitdir in */.git ; do
+  dir="$(dirname "$gitdir")"
+  echo
+  echo "===== $dir ====="
+  git -C "$dir" $@
+done
diff --git a/src/git_branch_summary.py b/src/git_branch_summary.py
new file mode 100755
index 0000000..6bd4378
--- /dev/null
+++ b/src/git_branch_summary.py
@@ -0,0 +1,64 @@
+#!/usr/bin/env python
+
+import sys, subprocess, re
+
+interesting_branch_names = [ 'master', 'sysmocom/iu', 'sysmocom/sccp', 'aper-prefix-onto-upstream' ]
+
+re_branch_name = re.compile('^..([^ ]+) .*')
+re_ahead = re.compile('ahead [0-9]+|behind [0-9]+')
+
+def branch_name(line):
+  m = re_branch_name.match(line)
+  return m.group(1)
+
+interesting = []
+
+def do_one_git(git_dir):
+  global interesting
+  branch_strs = subprocess.check_output(('git', '-C', git_dir, 'branch', '-vv')).splitlines()
+  interesting_branches = []
+
+  for line in branch_strs:
+    name = branch_name(line)
+    current_branch = False
+    if line.startswith('*'):
+      current_branch = True
+    elif name not in interesting_branch_names:
+      continue
+    ahead = re_ahead.findall(line)
+    if not ahead and not current_branch:
+      continue
+    ahead = [x.replace('ahead ', '+').replace('behind ', '-') for x in ahead]
+    br = (current_branch, name, ahead)
+    if current_branch:
+      interesting_branches.insert(0, br)
+    else:
+      interesting_branches.append(br)
+
+  status = subprocess.check_output(('git', '-C', git_dir, 'status'))
+  has_mods = 'modified:' in status
+
+  interesting.append((git_dir, has_mods, interesting_branches))
+
+
+for git_dir in sys.argv[1:]:
+  do_one_git(git_dir)
+
+
+first_col = max([len(git_dir) for git_dir, _, _ in interesting])
+first_col_fmt = '%' + str(first_col) + 's'
+
+for git_dir, has_mods, interesting_branches in interesting:
+  strs = [first_col_fmt % git_dir,]
+  if has_mods:
+    strs.append('MODS')
+  for current_branch, name, ahead in interesting_branches:
+    br = []
+    br.append(name)
+    if ahead:
+      br.append('[%s]' % '|'.join(ahead))
+    strs.append(''.join(br))
+
+  print ' '.join(strs)
+
+# vim: shiftwidth=2 expandtab tabstop=2
diff --git a/src/s b/src/s
new file mode 100755
index 0000000..2933164
--- /dev/null
+++ b/src/s
@@ -0,0 +1,154 @@
+#!/usr/bin/env bash
+Git() {
+  echo "git $@"
+  git $@
+  if [ "$?" != "0" ]; then
+    echo "GIT RETURNED ERROR!"
+    exit 1
+  fi
+}
+
+Git_may_fail() {
+  git $@
+}
+
+Git_branch() {
+  echo "$(Git -C "$dir" status)" | grep 'On branch' | sed 's/On branch //'
+}
+
+
+gitk_start() {
+  if [ -n "$DISPLAY" ]; then
+    gitk --all &
+    gitk_started="1"
+  fi
+}
+
+dance() {
+  echo
+  echo
+  br="$(Git_branch)"
+
+  echo "$dir"
+  cd "$dir"
+
+  st="$(Git status)"
+  mods="$(echo "$st" | grep 'modified:')"
+
+  stline="$(echo "$st" | grep '\(behind\|ahead\|up-to-date\|diverged\)')"
+
+  echo "$br"
+  echo "$stline"
+
+  if [ -z "$mods" -a -n "$(echo "$stline" | grep up-to-date)" ]; then
+    return 0
+  fi
+
+  gitk_start
+
+  if [ -n "$(echo "$stline" | grep behind)" ]; then
+    echo "Behind. git merge?  (empty = no, 'ok' = yes)"
+    read ok
+    if [ "x$ok" = xok ]; then
+      Git merge
+    fi
+  elif [ -n "$(echo "$stline" | grep ahead)" ]; then
+    echo "Ahead. commit to new branch? (enter name, empty = no)"
+    read wipbranch
+    if [ -n "$wipbranch" ]; then
+      Git checkout -b "$wipbranch"
+      Git_may_fail commit -am wip
+      #Git push --set-upstream origin "$wipbranch"
+      Git checkout "$br"
+    fi
+    echo "$br: git reset --hard origin/$br ?  (empty = no, 'ok' = yes)"
+    read ok
+    if [ "x$ok" = xok ]; then
+      Git reset --hard "origin/$br"
+    fi
+    return 0
+  elif [ -n "$(echo "$stline" | grep diverged)" ]; then
+    echo "Diverged. git reset --hard origin/$br ?  (empty = no, 'ok' = yes)"
+    read ok
+    if [ "x$ok" = xok ]; then
+      wipbranch="neels/wip_$(date +%Y%m%d_%H%M)"
+      Git checkout -b "$wipbranch"
+      Git_may_fail commit -am wip
+      Git checkout "$br"
+      Git reset --hard "origin/$br"
+    fi
+  elif [ -z "$(echo "$stline" | grep up-to-date)" ]; then
+    echo "Nothing to do."
+    echo "$st"
+  fi
+
+  if [ -n "$mods" ]; then
+    echo "Local mods"
+    echo "$mods"
+    echo
+    echo "commit to new branch? (enter name, empty = no)"
+    read wipbranch
+    if [ -n "$wipbranch" ]; then
+      Git checkout -b "$wipbranch"
+      Git_may_fail commit -am wip
+      #Git push --set-upstream origin "$wipbranch"
+      Git checkout "$br"
+      return 0
+    fi
+
+    echo "commit to this branch $br ?  (empty = no, 'ok' = yes)"
+    read ok
+    if [ "x$ok" = xok ]; then
+      Git commit -am wip
+      #Git push
+      return 0
+    fi
+  fi
+}
+
+kill_gitk() {
+  if [ "$gitk_started" = "1" ]; then
+    kill %1
+    gitk_started="0"
+  fi
+}
+
+
+basedir="$(pwd)"
+gitk_started="0"
+for gitdir in */.git ; do
+  cd "$basedir"
+  dir="$(dirname "$gitdir")"
+
+  orig_branch="$(Git_branch)"
+
+  kill_gitk
+  dance
+  cd "$basedir"
+
+  if [ "$orig_branch" != master ]; then
+	kill_gitk
+	git -C "$dir" checkout master || continue
+	dance
+	cd "$basedir"
+	pwd
+	git -C "$dir" checkout "$orig_branch"
+  fi
+
+#  if [ "$dir" = "openbsc" ]; then
+#    kill_gitk
+#    Git checkout "sysmocom/iu"
+#    dance
+#  fi
+
+  sleep .1
+
+done
+
+kill_gitk
+
+echo
+echo
+./st
+
+# vim: shiftwidth=2 expandtab
diff --git a/src/st b/src/st
new file mode 100755
index 0000000..a47de6b
--- /dev/null
+++ b/src/st
@@ -0,0 +1,10 @@
+#!/bin/sh
+
+git_dirs() {
+  for gitdir in */.git ; do
+    echo "$(dirname "$gitdir")"
+  done
+}
+
+./git_branch_summary.py $(git_dirs)
+# vim: shiftwidth=2 expandtab