hadoop enter multiple files issue

hadoop jar streaming-input ....
Now I have the following documents
ishopping2012-05-01_1.log
.
.
.
.
ishopping2012-09-26_1.log
ishopping2012-09-26_2.log
ishopping2012-09-26_3.log
ishopping2012-09-26_4.log
log files for several months , there is no good way to these files can be entered together ?
thanked in advance !
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simple , they rewrite a InputFormat
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specified directory
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I use hadoop streaming, do not want to rewrite those things , but still thanks
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support, refueling landlord
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specify an input directory to