Parameter Expansion with regular expression

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Java Parameter Expansion with regular expression

Hello experts,

I am exploring parameter expansion, and trying to cut the fields in a URL.

Following is the requirement:

I have

// abc.nnt /dir1/dir2/dir3/dir4/

What i need to get is the path after dir3, and dir3 will be passed.
output that i need is dir4/

I am trying to use like
am getting /dir1/dir2/dir3/dir4/ as the output.
Please let me know how will the required output.

Thanks in advance.
# 2  
echo ${mX} | sed 's#.*dir3/##'


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