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The functions described in this section all operate on strings that designate file names. All the functions have names that begin with the word `file'. These functions all return information about actual files or directories, so their arguments must all exist as actual files or directories unless otherwise noted.
25.6.1 Testing Accessibility Is a given file readable? Writable? 25.6.2 Distinguishing Kinds of Files Is it a directory? A symbolic link? 25.6.3 Truenames Eliminating symbolic links from a file name. 25.6.4 Other Information about Files How large is it? Any other names? Etc.
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