ayushtkn commented on PR #5547:
URL: https://github.com/apache/hadoop/pull/5547#issuecomment-1511269735
> Some pathnames which contains special character(s) may lead to unexpected
results. For example, there is a file named "/foo/file*" in my cluster, created
by "DistributedFileSystem.create(new Path("/foo/file*"))". When I want to
remove it, I type in "hadoop fs -rm /foo/file*" in shell. However, I remove all
the files with the prefix of "/foo/file*" unexpectedly. There are also some
other characters just like '*', such as ' ', '|', '&', etc.
Should have escaped the special character. That is how shell behaves.
```
bash-4.2$ hdfs dfs -ls /dir
Found 6 items
drwxr-xr-x - hadoop supergroup 0 2023-04-17 12:41 /dir/a
drwxr-xr-x - hadoop supergroup 0 2023-04-17 12:41 /dir/ab*
drwxr-xr-x - hadoop supergroup 0 2023-04-17 12:42 /dir/abc
drwxr-xr-x - hadoop supergroup 0 2023-04-17 12:42 /dir/abcd
drwxr-xr-x - hadoop supergroup 0 2023-04-17 12:42 /dir/abcde
drwxr-xr-x - hadoop supergroup 0 2023-04-17 12:42 /dir/abcdef
bash-4.2$ hdfs dfs -rm -r /dir/ab\\*
Deleted /dir/ab*
bash-4.2$ hdfs dfs -ls /dir
Found 5 items
drwxr-xr-x - hadoop supergroup 0 2023-04-17 12:41 /dir/a
drwxr-xr-x - hadoop supergroup 0 2023-04-17 12:42 /dir/abc
drwxr-xr-x - hadoop supergroup 0 2023-04-17 12:42 /dir/abcd
drwxr-xr-x - hadoop supergroup 0 2023-04-17 12:42 /dir/abcde
drwxr-xr-x - hadoop supergroup 0 2023-04-17 12:42 /dir/abcdef
```
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