Linux限定网络和工具环境下时间同步

使用curl或wget工具同步某网站时间到本地环境。

使用curl工具

#!/bin/bash

# Replace 'example.com' with the domain you want to query
url="http://example.com"

# Fetch HTTP header and extract Date field
date_str=$(curl -sI "$url" | grep -i "^Date:" | sed 's/Date: //I')

if [ -n "$date_str" ]; then
    # Set system date using the fetched date
    sudo date -s "$date_str"

    # Sync hardware clock with system time
    sudo hwclock --systohc
    echo "System time synchronized with $url and hardware clock updated"
else
    echo "Failed to fetch date from $url"
fi

使用wget工具

#!/bin/bash

# Replace 'example.com' with the domain you want to query
url="http://example.com"

# Fetch HTTP header and extract Date field
date_str=$(wget --server-response -O /dev/null "$url" 2>&1 | grep -i "^  Date:" | sed 's/^  Date: //I')

if [ -n "$date_str" ]; then
    # Set system date using the fetched date
    sudo date -s "$date_str"

    # Sync hardware clock with system time
    sudo hwclock --systohc
    echo "System time synchronized with $url and hardware clock updated"
else
    echo "Failed to fetch date from $url"
fi