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import getopt, sys, os, re, time, shutil
def usage():
print """
usage:
copyif.py -s <source directory> -d <dest directory>
copies files from source into dest, if the file already exists in dest
"""
def main():
try:
opts, args = getopt.getopt(sys.argv[1:], "hs:d:", ["help", "source","dest"])
except getopt.GetoptError, err:
# print help information and exit:
print str(err) # will print something like "option -a not recognized"
usage()
return
source = None
dest = None
for o, a in opts:
#print o
#print a
if o in ("-d", "--dest"):
dest = a
elif o in ("-s", "--source"):
source = a
elif o in ("-h", "--help"):
usage()
return
else:
print "unknown option", o
return
if not dest:
print "missing -d (dest) argument"
usage()
return
if not source:
print "missing -s (source) argument"
usage()
return
fs = []
for f in os.listdir(source):
df = os.path.join(dest, f)
if os.path.exists(df) and os.path.isfile(df):
shutil.copy(os.path.join(source,f), df)
if __name__ == "__main__":
main()
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