Python Operating System Services - Exercises, Practice, Solution

Python OS Services [18 exercises with solution]

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1. Write a Python program to get the name of the operating system (Platform independent), information of the current operating system, current working directory, print files and directories in the current directory, and raise errors if the path or file name is invalid.
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2. Write a Python program to list only directories, files and all directories, files in a specified path.
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3. Write a Python program to scan a specified directory and identify the subdirectories and files.
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4. Write a Python program to check access to a specified path. Test the existence, readability, writability and executability of the specified path.
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5. Write a Python program to get the size, permissions, owner, device, created, last modified and last accessed date and time of a specified path.
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6. Write a Python program to create a symbolic link and read it to determine the original file pointed to by the link.
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7. Write a Python program to create a file and write some text and rename the file name.
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8. Write a Python program to find the parent's process ID, real user ID of the current process and change the real user ID.
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9. Write a Python program to retrieve the current working directory and change the dir (move up one).
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10. Write a Python program to access environment variables and the value of the environment variable.
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11. Write a Python program to iterate over a root level path and print all its sub-directories and files, as well as loop over specified dirs and files.
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12. Write a Python program to test whether a given path exists or not. Find the filename and directory portion of the path if it exists.
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13. Write a Python program to join one or more path components together and split a given path into directories and files.
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14. Write a Python program to alter the owner and the group ID of a specified file.
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15. Write a Python program to get information about the file pertaining to file mode. Print the information - ID of device containing file, inode number, protection, number of hard links, user ID of owner, group ID of owner, total size (in bytes), time of last access, time of last modification and time of last status change.
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16. Write a Python program to write a string to a buffer and retrieve the value written, at the end discard buffer memory.
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17. Write a Python program to run an operating system command using the OS module.
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18. Write a Python program to start a new process replacing the current process.
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