[转帖]Linux清空正在运行的log日志文件内容
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Sure, here's the summary you requested:
**Command:**
```
cat /dev/null > file.log
```
**Explanation:**
* `cat /dev/null` opens a null device and writes nothing to it.
* `>` is an operator that redirects the output of the command to a file named `file.log`.
* `file.log` is the file where the output of the command will be written.
**Output:**
This command will create a new file named `file.log` and write nothing to it.
**Note:**
* The `cat` command is used to concatenate and print the output of multiple commands.
* `&` is used to indicate that the command should be executed in the background.
* `>` is used to redirect the output of the command to a file.
* `file.log` is the file where the output of the command will be written.
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