I am facing a strange issue in `ubuntu` when I hit this

```
curl -i -X POST -d '{"name":"kuldeep dangi", "Service_Request"}' http://localhost/index.php

```

from terminal I am receiving

```
The program 'curl' is currently not installed. You can install it by typing:
sudo apt-get install curl

```

but when I make the same curl request using `PHP` I am getting the expected reult.