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Find last occurrence of a character in a string

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# 1  
Old 05-30-2013
Find last occurrence of a character in a string
Hello

how to find last occurence of a string

for example in the following I want last occurence of '-' i.e. position 12

Code:
str="aa-bbb-cccc-ddd-ee"

my pupose is to get the string 'ee'

Thanks and Regards
Chetanz
# 2  
Old 05-30-2013
Code:
echo "aa-bbb-cccc-ddd-ee" | awk -F"-" '{print $NF}'

# 3  
Old 05-30-2013
Many Thanks Pravin27

Sorry i misphrased the question

I got there but stumbled at getting last position

could you please advise how to get the "position" of last '-' in the string?

Thanks and Regards
Chetanz
# 4  
Old 05-30-2013
here you go
Code:
echo "aa-bbb-cccc-ddd-ee" | awk -F"-" '{print length($0)-length($NF)}'

# 5  
Old 05-30-2013
Assuming you're using a standards conforming shell (such as bash or ksh), this will also work:
Code:
str="aa-bbb-cccc-ddd-ee"
end=${str##*-}
echo "Last - is in column $((${#str} - ${#end}))"

and only uses shell built-ins.

With your sample string, it produces:
Code:
Last - is in column 16

# 6  
Old 05-30-2013
Code:
start=${str%-*}
echo ${#start}
15

This is OK, as the shell's string index starts with 0:
Code:
echo ${str:${#start}:1}
-

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