Python 3 – os.tcgetpgrp() Method
The os.tcgetpgrp()
method is a python builtin method that returns the process group associated with the terminal given by fd
(a file descriptor).
This method returns the process group ID of the foreground process group of the terminal specified by file descriptor fd. If there is an error, the method raises an OSError
.
Syntax
Here is the syntax of os.tcgetpgrp()
method:
os.tcgetpgrp(fd)
Parameters
This method accepts a single parameter fd
which stands for file descriptor.
Return Value
The os.tcgetpgrp()
method returns the process group ID of the foreground process group of the terminal specified by file descriptor fd
.
Example
Here is an example demonstrating the usage of os.tcgetpgrp()
method.
import os
# Open the terminal file descriptor
file_descriptor = os.open("/dev/tty", os.O_RDWR)
# Get the process group ID of the foreground process group
pgid = os.tcgetpgrp(file_descriptor)
# Display the result
print("Process group ID of the foreground process group: ", pgid)
Output:
Process group ID of the foreground process group: 10791
In the above example, we first open the /dev/tty
file descriptor for read and write operations. Then, we pass this file descriptor to os.tcgetpgrp()
method to get the process group ID of the foreground process group associated with this file descriptor. Finally, we print the result to the console.
Conclusion
In conclusion, the os.tcgetpgrp()
method is a useful method in python that returns the process group ID of the foreground process group of the terminal specified by file descriptor. This method can be used to determine the process group of the foreground process running on a specified terminal file descriptor. The method is simple to use and returns the desired result in an easy to read format.