Mercurial > hg > config
annotate python/lsex.py @ 14:ac34d580c6d7
make symbolic links when necessary (should generalize)
author | k0s <k0scist@gmail.com> |
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date | Tue, 19 Jan 2010 16:22:21 -0500 |
parents | f3ab51c79813 |
children | 71576cdc28ab |
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f3ab51c79813
adding configuration from https://svn.openplans.org/svn/config_jhammel/
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1 #!/usr/bin/env python |
f3ab51c79813
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2 import os |
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3 |
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4 # make sure duplicate path elements aren't printed twice |
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5 def ordered_set(alist): |
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6 seen = set() |
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7 new = [] |
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8 for item in alist: |
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9 if item in seen: |
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10 continue |
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11 seen.add(item) |
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12 new.append(item) |
f3ab51c79813
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13 return new |
f3ab51c79813
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14 |
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15 def lsex(path=None): |
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16 """ |
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17 list executable files on the path |
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18 o path: list of directories to search. if not specified, use system path |
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19 """ |
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20 |
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21 if path is None: |
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22 # use system path |
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23 path = ordered_set(os.environ['PATH'].split(':')) |
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24 |
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25 executables = [] |
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26 |
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k0s <k0scist@gmail.com>
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27 # add the executable files to the list |
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28 for i in path: |
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29 if not os.path.isdir(i): |
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30 continue |
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31 files = [ os.path.join(i,j) for j in os.listdir(i) ] |
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32 files = filter(lambda x: os.access(x, os.X_OK), files) |
f3ab51c79813
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33 files.sort() # just to make the output pretty |
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34 executables.extend(files) |
f3ab51c79813
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35 return executables |
f3ab51c79813
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36 |
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37 if __name__ == '__main__': |
f3ab51c79813
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38 for i in lsex(): |
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39 print i |