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Using a wildcard, the file is found.
-bash-3.1$ hadoop fs -ls k20d2f4/bin-2\?04+1_AF650AE776488A4D
Found 1 items
-rw------- 3 tsz users 17 2010-03-05 19:43 /user/tsz/k20d2f4/bin-2^04+1_AF650AE776488A4D
Replace the wildcard with ^, the file is not found.
-bash-3.1$ hadoop fs -ls k20d2f4/bin-2^04+1_AF650AE776488A4D
ls: Cannot access k20d2f4/bin-2^04+1_AF650AE776488A4D: No such file or directory.
fs -ls does not work if a path name contains the ^ character