file manipulation -- Unix file manipulation functions

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• fileExists -- whether a file exists
• isRegularFile -- whether a file is a regular file
• isDirectory -- whether a file is a directory
• fileTime -- get or set file modified time
• copyFile, see copyFile(String,String)
• moveFile, see moveFile(String,String)
• removeFile -- unlink a file
• findFiles, see findFiles(String) -- find files recursively
• symlinkFile -- make a symbolic link to a file
• linkFile, see linkFile(String,String) -- make a new link to a file
• readlink -- readlink fn
• mkdir
• makeDirectory, see makeDirectory(String) -- make a directory
• copyDirectory, see copyDirectory(String,String)
• removeDirectory -- remove a directory
• symlinkDirectory, see symlinkDirectory(String,String) -- make symbolic links for all files in a directory tree
• readDirectory -- read the contents of a directory
• realpath -- convert a filename to one passing through no symbolic links
• temporaryFileName -- make a temporary file name