使用uptime命令可直接查看系統(tǒng)運行時間，顯示當前時間、運行時長、用戶數(shù)和負載；2. 通過cat /proc/uptime獲取以秒為單位的運行時間，便於腳本處理；3. top和w命令在頭部顯示uptime信息，適合同時監(jiān)控其他系統(tǒng)狀態(tài)。
To check the uptime of a Linux server, you can use built-in commands that provide system runtime information. The most common and straightforward way is using the uptime command.
Using the uptime Command
Open a terminal or connect via SSH to your Linux server and type:
uptimeThis displays how long the system has been running, along with the current time, number of users, and system load averages for the past 1, 5, and 15 minutes. Example output:
14:32:10 up 10 days, 3:15, 1 user, load average: 0.15, 0.10, 0.05Check Uptime via /proc/uptime
The /proc/uptime file contains uptime information in seconds. Run:
cat /proc/uptimeOutput example:
867492.12 866103.45The first number is the total number of seconds the system has been running. You can convert this into days by dividing by 86400 (seconds in a day).
Using the top or w Command
Both top and w display uptime in their header line.
- Run top – the first line shows uptime just like the uptime command.
- Run w – it also lists the current time, uptime, user count, and load averages.
These tools are useful when you also want to inspect other system activity like running processes or logged-in users.
Basically, uptime is the quickest method. For scripting or precise values, reading /proc/uptime gives raw data you can process further. All methods are reliable and available on virtually every Linux distribution.
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