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# Python os.fpathconf() Method

## Description:

This method returns system configuration information relevant to an open file.

This variable is very similar to unix system call fpathconf() and accept the similar arguments.

## Syntax:

    os.fpathconf(fd, name)

## Parameters:

Here is the detail of parameters:

- fd: This is the file descriptor for which system configuration information is to be returned.

- name: This specifies the configuration value to retrieve; it may be a string which is the name of a defined system value; these names are specified in a number of standards (POSIX.1, Unix 95, Unix 98, and others). The names known to the host operating system are given in the os.pathconf_names dictionary.

## Example:

    #!/usr/bin/python

    import os, sys

    # Open a file
    fd = os.open( "foo.txt", os.O_RDWR|os.O_CREAT )

    print "%s" % os.pathconf_names

    # Now get maximum number of links to the file.
    no = os.fpathconf(fd, 'PC_LINK_MAX')
    print "Maximum number of links to the file. :%d" % no

    # Now get maximum length of a filename
    no = os.fpathconf(fd, 'PC_NAME_MAX')
    print "Maximum length of a filename :%d" % no

    # Close opened file
    os.close( fd)

    print "Closed the file successfully!!"

This would produce following result:

    {'PC_MAX_INPUT': 2, 'PC_VDISABLE': 8, 'PC_SYNC_IO': 9,
    'PC_SOCK_MAXBUF': 12, 'PC_NAME_MAX': 3, 'PC_MAX_CANON': 1,
    'PC_PRIO_IO': 11, 'PC_CHOWN_RESTRICTED': 6, 'PC_ASYNC_IO': 10,
    'PC_NO_TRUNC': 7, 'PC_FILESIZEBITS': 13, 'PC_LINK_MAX': 0,
    'PC_PIPE_BUF': 5, 'PC_PATH_MAX': 4}

    Maximum number of links to the file. :127
    Maximum length of a filename :255
    Closed the file successfully!!

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