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44 lines
1.0 KiB
44 lines
1.0 KiB
6 years ago
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#! /usr/bin/env python3
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# findlinksto
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#
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# find symbolic links to a path matching a regular expression
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import os
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import sys
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import re
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import getopt
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def main():
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try:
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opts, args = getopt.getopt(sys.argv[1:], '')
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if len(args) < 2:
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raise getopt.GetoptError('not enough arguments', None)
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except getopt.GetoptError as msg:
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sys.stdout = sys.stderr
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print(msg)
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print('usage: findlinksto pattern directory ...')
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sys.exit(2)
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pat, dirs = args[0], args[1:]
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prog = re.compile(pat)
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for dirname in dirs:
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os.walk(dirname, visit, prog)
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def visit(prog, dirname, names):
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if os.path.islink(dirname):
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names[:] = []
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return
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if os.path.ismount(dirname):
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print('descend into', dirname)
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for name in names:
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name = os.path.join(dirname, name)
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try:
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linkto = os.readlink(name)
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if prog.search(linkto) is not None:
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print(name, '->', linkto)
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except OSError:
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pass
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if __name__ == '__main__':
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main()
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