Mercurial > hg > config
view python/lsex.py @ 874:ee3bcd644727
remove obsolete elements
author | Jeff Hammel <k0scist@gmail.com> |
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date | Tue, 07 May 2019 13:22:43 -0700 (2019-05-07) |
parents | 20aa4a6ef719 |
children |
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#!/usr/bin/env python import os import sys from optparse import OptionParser try: # python 2 string = (str, unicode) except NameError: # python 3 string = (str,) def ordered_set(alist): """make sure duplicate path elements aren't printed twice""" seen = set() new = [] for item in alist: if item in seen: continue seen.add(item) new.append(item) return new def lsex(path=None): """ list of executable files on the path - path: list or PATH-style string of directories to search. if not specified, use system PATH """ if path is None: # use system path path = os.environ['PATH'] if isinstance(path, string): path = ordered_set(path.split(os.pathsep)) executables = [] # add the executable files to the list for i in path: if not os.path.isdir(i): continue files = [ os.path.join(i,j) for j in os.listdir(i) ] files = list(filter(lambda x: os.access(x, os.X_OK), files)) files.sort() # just to make the output pretty executables.extend(files) return executables def executable_names(path=None): executables = lsex(path) executables = set([os.path.basename(i) for i in executables]) return executables if __name__ == '__main__': parser = OptionParser() parser.add_option('--names', action='store_true', default=False, help="list only the set of names") options, args = parser.parse_args() if options.names: print ('\n'.join(sorted(executable_names()))) sys.exit(0) for i in lsex(): print (i)