linux - 在 shell 中集成内置更新功能，以便在有可用时接收 OTA 更新

Question

我在这里为这件事情苦苦挣扎，如果它能被整合，那就太棒了。好吧，我的想法是，创建一个将在特定时间运行的函数，该函数将检查是否有新版本的脚本。但我不知道如何将命令放在一起。我这里已经有了一些草图:

SCRIPT_NAME="$0"
ARGS="$@"
NEW_FILE="/tmp/blog.sh"
VERSION="1.0"

check_upgrade () {

# check if there is a new version of this file
# here, hypothetically we check if a file exists in the disk.
# it could be an apt/yum check or whatever...
[ -f "$NEW_FILE" ] && {


# install a new version of this file or package
# again, in this example, this is done by just copying the new file
echo "Found a new version of me, updating myself..."
cp "$NEW_FILE" "$SCRIPT_NAME"
rm -f "$NEW_FILE"

# note that at this point this file was overwritten in the disk
# now run this very own file, in its new version!
echo "Running the new version..."
$SCRIPT_NAME $ARGS

# now exit this old instance
exit 0
}

我知道这样做是可行的，但我没有在互联网上找到任何有用的东西。每一个建议将不胜感激。

Answer 1

假设脚本一直在运行，制作另一个脚本来 curl 文件并与原始文件进行检查。像这样的东西:

if [ version newer ]; then
    kill old verseion
    mv "new version" 'old version"
    ./new version
else:
    delete tmp file
fi

按您认为合适的时间间隔使用 cron 运行它