init; not very clean

locked.sh

@@ -0,0 +1,3 @@
+#!/bin/zsh
+
+sed -i  '4 s/$/?/' /mnt/mirrors/status/${1//\//\-}.log

postsync.sh

@@ -0,0 +1,3 @@
+#! /bin/zsh
+
+echo -e "${1}\n$(du -h --max-depth=0 /mnt/mirrors/$1 | awk '{print $1}')\n$(date +'%Y-%m-%d %H:%M:%S')\n${2}" > /mnt/mirrors/status/${1//\//\-}.log

presync.sh

@@ -0,0 +1,4 @@
+#!/bin/zsh
+
+sed -i "4c syncing..." /mnt/mirrors/status/${1//\//\-}.log
+sed -i "3c $(date +'%Y-%m-%d %H:%M:%S')" /mnt/mirrors/status/${1//\//\-}.log

sync.sh

@@ -0,0 +1,15 @@
+#!/bin/zsh
+
+for src in {CTAN,ubuntu,docker-ce/linux/ubuntu,ubuntu-releases}
+do
+    if [ ! -f "/tmp/mirror-${src//\//\-}.lock" ];
+    then
+        touch /tmp/mirror-${src//\//\-}.lock
+            /home/root/programs/dxsync/presync.sh $src
+            rsync -4avzthP --stats --delete --bwlimit=6000 --log-file=/var/log/rsync-mirrors-${src//\//\-}.log rsync://mirrors4.tuna.tsinghua.edu.cn/$src /mnt/mirrors/$src
+            /home/root/programs/dxsync/postsync.sh ${src} $?
+	rm /tmp/mirror-${src//\//\-}.lock
+    else
+        /home/root/programs/dxsync/locked.sh $src
+    fi
+done