1 #! /usr/bin/env python

     2 

     3 # Variant of "which".

     4 # On stderr, near and total misses are reported.

     5 # '-l<flags>' argument adds ls -l<flags> of each file found.

     6 

     7 import sys

     8 if sys.path[0] in (".", ""): del sys.path[0]

     9 

    10 import sys, os

    11 from stat import *

    12 

    13 def msg(str):

    14     sys.stderr.write(str + '\n')

    15 

    16 def main():

    17     pathlist = os.environ['PATH'].split(os.pathsep)

    18 

    19     sts = 0

    20     longlist = ''

    21 

    22     if sys.argv[1:] and sys.argv[1][:2] == '-l':

    23         longlist = sys.argv[1]

    24         del sys.argv[1]

    25 

    26     for prog in sys.argv[1:]:

    27         ident = ()

    28         for dir in pathlist:

    29             filename = os.path.join(dir, prog)

    30             try:

    31                 st = os.stat(filename)

    32             except os.error:

    33                 continue

    34             if not S_ISREG(st[ST_MODE]):

    35                 msg(filename + ': not a disk file')

    36             else:

    37                 mode = S_IMODE(st[ST_MODE])

    38                 if mode & 0111:

    39                     if not ident:

    40                         print filename

    41                         ident = st[:3]

    42                     else:

    43                         if st[:3] == ident:

    44                             s = 'same as: '

    45                         else:

    46                             s = 'also: '

    47                         msg(s + filename)

    48                 else:

    49                     msg(filename + ': not executable')

    50             if longlist:

    51                 sts = os.system('ls ' + longlist + ' ' + filename)

    52                 if sts: msg('"ls -l" exit status: ' + repr(sts))

    53         if not ident:

    54             msg(prog + ': not found')

    55             sts = 1

    56 

    57     sys.exit(sts)

    58 

    59 if __name__ == '__main__':

    60     main()