| 1 | n/a | #! /usr/bin/env python3 |
|---|
| 2 | n/a | |
|---|
| 3 | n/a | # findlinksto |
|---|
| 4 | n/a | # |
|---|
| 5 | n/a | # find symbolic links to a path matching a regular expression |
|---|
| 6 | n/a | |
|---|
| 7 | n/a | import os |
|---|
| 8 | n/a | import sys |
|---|
| 9 | n/a | import re |
|---|
| 10 | n/a | import getopt |
|---|
| 11 | n/a | |
|---|
| 12 | n/a | def main(): |
|---|
| 13 | n/a | try: |
|---|
| 14 | n/a | opts, args = getopt.getopt(sys.argv[1:], '') |
|---|
| 15 | n/a | if len(args) < 2: |
|---|
| 16 | n/a | raise getopt.GetoptError('not enough arguments', None) |
|---|
| 17 | n/a | except getopt.GetoptError as msg: |
|---|
| 18 | n/a | sys.stdout = sys.stderr |
|---|
| 19 | n/a | print(msg) |
|---|
| 20 | n/a | print('usage: findlinksto pattern directory ...') |
|---|
| 21 | n/a | sys.exit(2) |
|---|
| 22 | n/a | pat, dirs = args[0], args[1:] |
|---|
| 23 | n/a | prog = re.compile(pat) |
|---|
| 24 | n/a | for dirname in dirs: |
|---|
| 25 | n/a | os.walk(dirname, visit, prog) |
|---|
| 26 | n/a | |
|---|
| 27 | n/a | def visit(prog, dirname, names): |
|---|
| 28 | n/a | if os.path.islink(dirname): |
|---|
| 29 | n/a | names[:] = [] |
|---|
| 30 | n/a | return |
|---|
| 31 | n/a | if os.path.ismount(dirname): |
|---|
| 32 | n/a | print('descend into', dirname) |
|---|
| 33 | n/a | for name in names: |
|---|
| 34 | n/a | name = os.path.join(dirname, name) |
|---|
| 35 | n/a | try: |
|---|
| 36 | n/a | linkto = os.readlink(name) |
|---|
| 37 | n/a | if prog.search(linkto) is not None: |
|---|
| 38 | n/a | print(name, '->', linkto) |
|---|
| 39 | n/a | except OSError: |
|---|
| 40 | n/a | pass |
|---|
| 41 | n/a | |
|---|
| 42 | n/a | if __name__ == '__main__': |
|---|
| 43 | n/a | main() |
|---|
