how to check version in Linux?
时间: 2024-01-28 18:05:11 浏览: 39
To check the version of Linux you are using, you can open a terminal and type in the following command:
```
lsb_release -a
```
This command will display information about your Linux distribution, including its version number. Alternatively, you can also use the following command:
```
cat /etc/os-release
```
This command will display information about your operating system, including the version number.
相关问题
how to use restTemplate in springboot?
To use RestTemplate in Spring Boot, you can follow the following steps:
1. Add the RestTemplate dependency in your pom.xml file or build.gradle file.
2. Create a RestTemplate bean in your application configuration file, either by using the @Bean annotation or by using the RestTemplateBuilder class.
3. Use the RestTemplate to make HTTP requests by calling its methods, such as getForObject() or postForObject(), and passing in the URL, request body, and any headers or parameters needed.
Here is an example of how to use RestTemplate to make a GET request:
```
@RestController
public class MyController {
@Autowired
private RestTemplate restTemplate;
@GetMapping("/my-resource")
public MyResource getMyResource() {
String url = "http://my-api.com/my-resource";
MyResource myResource = restTemplate.getForObject(url, MyResource.class);
return myResource;
}
}
```
In this example, we are injecting the RestTemplate bean into our controller using the @Autowired annotation. We then use the RestTemplate to make a GET request to "http://my-api.com/my-resource" and deserialize the response into a MyResource object.
how to find number in Dataframe?
To find a number in a DataFrame, you can use the following code:
```python
import pandas as pd
# create a DataFrame
df = pd.DataFrame({'A': [1, 2, 3], 'B': [4, 5, 6], 'C': [7, 8, 9]})
# check if the number 5 is in the DataFrame
if 5 in df.values:
print('Number 5 is in the DataFrame')
else:
print('Number 5 is not in the DataFrame')
```
In this example, the code creates a DataFrame with three columns and checks if the number 5 is in the DataFrame using the `in` keyword and the `values` attribute of the DataFrame. If the number is found, the code prints a message indicating that it is in the DataFrame; otherwise, it prints a message indicating that it is not found.
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