diff --git a/XXX b/XXX
index 5c98fbb..b5b11ac 100755
--- a/XXX
+++ b/XXX
@@ -1,3 +1,3 @@
 #!/bin/sh
 # List XXXs, FIXMEs and TODOs in files
-ag '^(?!.*mktemp).*XXX|FIXME|TODO'
+ag '^(?!.*mktemp).*XXX|FIXME|TODO' "$@"
diff --git a/docker-check-updates b/docker-check-updates
index d627bbd..e8256f0 100755
--- a/docker-check-updates
+++ b/docker-check-updates
@@ -2,10 +2,10 @@
 """Check Docker images for security/distro updates. Assumes DNF."""
 
 from __future__ import division, print_function
-from docker import Client
+import docker
 import subprocess
 
-c = Client(base_url='unix://var/run/docker.sock')
+c = docker.APIClient(base_url='unix://var/run/docker.sock')
 for container in c.containers():
     name = container['Names'][0]
     id_ = container['Id']
diff --git a/fetchmail-errors b/fetchmail-errors
index a0d297a..33d6d72 100755
--- a/fetchmail-errors
+++ b/fetchmail-errors
@@ -7,7 +7,7 @@ import systemd.journal as journal
 
 yesterday = datetime.datetime.today() - datetime.timedelta(1)
 SINCE = yesterday
-MINCOUNT = 5
+MINCOUNT = 20
 
 
 j = journal.Reader()
diff --git a/gen-yum b/gen-yum
index 0e59b6b..2b9afcf 100755
--- a/gen-yum
+++ b/gen-yum
@@ -7,6 +7,7 @@ eval BASE_DIRS=~/www_static/dnf.bl0rg.net/*/*
 set -e
 
 for base_dir in $BASE_DIRS; do
+  restorecon -Rv $base_dir
   for YUM in $base_dir/{SRPMS,i386,x86_64}; do
     if [ -d $YUM ]; then
       echo "== $YUM"
diff --git a/git-fsck-all b/git-fsck-all
index 69b5af9..2cef177 100755
--- a/git-fsck-all
+++ b/git-fsck-all
@@ -15,6 +15,8 @@ import subprocess
 
 def git_directories(startdir):
     for dirpath, dirnames, _ in os.walk(startdir):
+        if '.sync' in dirpath:
+            continue
         if set(['info', 'objects', 'refs']).issubset(set(dirnames)):
             yield dirpath
 
diff --git a/large-files b/large-files
index e7bb1f2..49e0e25 100755
--- a/large-files
+++ b/large-files
@@ -1,8 +1,8 @@
 #!/bin/sh
 # Find large files on this host
 
-LARGE='+100M'
+LARGE=${1:-100M}
 WHERE=`mount -t ext2,ext3,ext4,btrfs,ntfs,reiserfs,xfs,zfs | awk '{ print $3 }'`
 IGNORE='^(/var/lib/rpm/Packages|/home/.*/.btsync/.*\.db)$'
 
-sudo find $WHERE -xdev -size $LARGE | grep --line-buffered -Ev "$IGNORE"
+sudo find $WHERE -xdev -size +$LARGE | grep --line-buffered -Ev "$IGNORE"
diff --git a/libvirt-restart-running b/libvirt-restart-running
new file mode 100755
index 0000000..4690fb2
--- /dev/null
+++ b/libvirt-restart-running
@@ -0,0 +1,19 @@
+#!/usr/bin/python
+# Restart all running libvirt domains
+
+from __future__ import division, print_function
+
+import libvirt
+import sys
+
+conn = libvirt.open('qemu:///system')
+if not conn:
+    print('Failed to open connection to the hypervisor!')
+    sys.exit(1)
+
+for domain in conn.listAllDomains():
+    name = domain.name()
+    if domain.isActive():
+        print('Restarting {}...'.format(name))
+        domain.destroyFlags(flags=libvirt.VIR_DOMAIN_DESTROY_GRACEFUL)
+        domain.create()
diff --git a/maildir-zero b/maildir-zero
index 37199dc..80498cf 100755
--- a/maildir-zero
+++ b/maildir-zero
@@ -67,8 +67,15 @@ else:
     key = lambda i: i[0]
     reverse = False
 
-length_name  = max(len(name) for name in counts.keys())
-length_count = max(len(str(count)) for count in counts.values())
+try:
+    length_name = max(len(name) for name in counts.keys())
+except:
+    length_name = len('Total')
+try:
+    length_count = max(len(str(count)) for count in counts.values())
+except:
+    length_count = 3
+
 for name, count in sorted(counts.items(), key=key, reverse=reverse):
     print('{0:{1}}\t{2:{3}d}'.format(name, length_name, count, length_count))
 
diff --git a/search-nulls b/search-nulls
new file mode 100755
index 0000000..67e88d7
--- /dev/null
+++ b/search-nulls
@@ -0,0 +1,31 @@
+#!/usr/bin/env python
+"""Find files starting with null bytes"""
+
+from __future__ import division, print_function
+import argparse
+import os
+
+
+parser = argparse.ArgumentParser(
+    description='Find files starting with null bytes')
+parser.add_argument(
+    'directories', metavar='dir', default=['.'], nargs='*',
+    type=str, help='directory to be searched')
+parser.add_argument(
+    '-n', dest='nullbytes', default=16,
+    type=int, help='number of null bytes')
+args = parser.parse_args()
+
+
+for directory in args.directories:
+    for dirpath, _, filenames in os.walk(directory):
+        for filename in filenames:
+            filename = os.path.join(dirpath, filename)
+
+            if not os.path.isfile(filename):
+                continue
+
+            with open(filename, 'rb') as f:
+                firstbytes = f.read(args.nullbytes)
+                if firstbytes == b'\0'*args.nullbytes:
+                    print(filename)