symlink-traversal

In Linux, if you have a path to a file which you know is a symlink, how do you programmatically determine (in C or C++) the path to the file that it points to? The readlink function. Do a man 2 readlink . This function is part of the Posix API, so it should work on almost any Unix. If the path starts with a '/' , then its an absolute symlink and you have the full absolute path of the file to which it refers (which may be another symbolic link, and you'll have to repeat the process again). If the path does not start with ' / ', then it's a relative link and is interpreted relative to the

I have a linux directory (and don't need any windows checkout): /home/me/projects/project1 In this project, I need SVN (1.8.8) to follow a symlink "link1": /home/me/projects/project1/link1/<some_directories_and_files> But SVN won't let me do that, it just add link1 but not its content. If I try to add its content, I get an error: svn add link1/* svn: E145001: Can't schedule an addition of '/home/me/projects/project1/link1/first_directory' below a not-directory node I tried converting link1 to hard link but I can't do that either: ln /path/to/my/linked/directory link1 ln: ‘/path/to/my/linked

How do I get this piece to follow symlinks in python 2.6? def load_recursive(self, path): for subdir, dirs, files in os.walk(path): for file in files: if file.endswith('.xml'): file_path = os.path.join(subdir, file) try: do_stuff(file_path) except: continue Set followlinks to True . This is the fourth argument to the os.walk method, reproduced below: os.walk(top[, topdown=True[, onerror=None[, followlinks=False]]]) This option was added in Python 2.6. 来源： https://stackoverflow.com/questions/3771696/python-os-walk-follow-symlinks

Yet another Docker symlink question. I have a bunch of files that I want to copy over to all my Docker builds. My dir structure is: parent_dir - common_files - file.txt - dir1 - Dockerfile - symlink -> ../common_files In above example, I want file.txt to be copied over when I docker build inside dir1. But I don't want to maintain multiple copies of file.txt. Per this link, as of docker version 0.10 , docker build must Follow symlinks inside container's root for ADD build instructions. But I get no such file or directory when I build with either of these lines in my Dockerfile: ADD symlink