FM / comparisons

/usr/lib64/python2.7/Demo/comparisons

Name	Size	Mode	Actions
patterns	30	0644	edit dl rm
README	2336	0644	edit dl rm
regextest.py	1514	0755	edit dl rm
regextest.pyc	1089	0644	edit dl rm
regextest.pyo	1089	0644	edit dl rm
sortingtest.py	1264	0755	edit dl rm
sortingtest.pyc	1048	0644	edit dl rm
sortingtest.pyo	1048	0644	edit dl rm
systemtest.py	2287	0755	edit dl rm
systemtest.pyc	1598	0644	edit dl rm
systemtest.pyo	1598	0644	edit dl rm

Edit: /usr/lib64/python2.7/Demo/comparisons/systemtest.py (2287B)

#! /usr/bin/python2.7

# 3)  System Test
#
#     Given a list of directories, report any bogus symbolic links contained
#     anywhere in those subtrees.  A bogus symbolic link is one that cannot
#     be resolved because it points to a nonexistent or otherwise
#     unresolvable file.  Do *not* use an external find executable.
#     Directories may be very very deep.  Print a warning immediately if the
#     system you're running on doesn't support symbolic links.

# This implementation:
# - takes one optional argument, using the current directory as default
# - uses chdir to increase performance
# - sorts the names per directory
# - prints output lines of the form "path1 -> path2" as it goes
# - prints error messages about directories it can't list or chdir into

import os
import sys
from stat import *

def main():
    try:
        # Note: can't test for presence of lstat -- it's always there
        dummy = os.readlink
    except AttributeError:
        print "This system doesn't have symbolic links"
        sys.exit(0)
    if sys.argv[1:]:
        prefix = sys.argv[1]
    else:
        prefix = ''
    if prefix:
        os.chdir(prefix)
        if prefix[-1:] != '/': prefix = prefix + '/'
        reportboguslinks(prefix)
    else:
        reportboguslinks('')

def reportboguslinks(prefix):
    try:
        names = os.listdir('.')
    except os.error, msg:
        print "%s%s: can't list: %s" % (prefix, '.', msg)
        return
    names.sort()
    for name in names:
        if name == os.curdir or name == os.pardir:
            continue
        try:
            mode = os.lstat(name)[ST_MODE]
        except os.error:
            print "%s%s: can't stat: %s" % (prefix, name, msg)
            continue
        if S_ISLNK(mode):
            try:
                os.stat(name)
            except os.error:
                print "%s%s -> %s" % \
                      (prefix, name, os.readlink(name))
        elif S_ISDIR(mode):
            try:
                os.chdir(name)
            except os.error, msg:
                print "%s%s: can't chdir: %s" % \
                      (prefix, name, msg)
                continue
            try:
                reportboguslinks(prefix + name + '/')
            finally:
                os.chdir('..')

main()

#! /usr/bin/python2.7 # 3) System Test # # Given a list of directories, report any bogus symbolic links contained # anywhere in those subtrees. A bogus symbolic link is one that cannot # be resolved because it points to a nonexistent or otherwise # unresolvable file. Do *not* use an external find executable. # Directories may be very very deep. Print a warning immediately if the # system you're running on doesn't support symbolic links. # This implementation: # - takes one optional argument, using the current directory as default # - uses chdir to increase performance # - sorts the names per directory # - prints output lines of the form "path1 -> path2" as it goes # - prints error messages about directories it can't list or chdir into import os import sys from stat import * def main(): try: # Note: can't test for presence of lstat -- it's always there dummy = os.readlink except AttributeError: print "This system doesn't have symbolic links" sys.exit(0) if sys.argv[1:]: prefix = sys.argv[1] else: prefix = '' if prefix: os.chdir(prefix) if prefix[-1:] != '/': prefix = prefix + '/' reportboguslinks(prefix) else: reportboguslinks('') def reportboguslinks(prefix): try: names = os.listdir('.') except os.error, msg: print "%s%s: can't list: %s" % (prefix, '.', msg) return names.sort() for name in names: if name == os.curdir or name == os.pardir: continue try: mode = os.lstat(name)[ST_MODE] except os.error: print "%s%s: can't stat: %s" % (prefix, name, msg) continue if S_ISLNK(mode): try: os.stat(name) except os.error: print "%s%s -> %s" % \ (prefix, name, os.readlink(name)) elif S_ISDIR(mode): try: os.chdir(name) except os.error, msg: print "%s%s: can't chdir: %s" % \ (prefix, name, msg) continue try: reportboguslinks(prefix + name + '/') finally: os.chdir('..') main()