sed command to replace slash in date format only

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# 1  
Old 09-11-2013
sed command to replace slash in date format only

Hello experts.

I haven't been able to find a solution for this using the sed command.

I only want to replace the forward slash with string "FW_SLASH" only if there's a number right after the slash while preserving the original number.

I have a file containing 2 entries:
Original File:

Desired File:

I have tried this code but I'm not able to preserve the original number:
sed 's/\/[0-9]/FWD_SLASH/g'

# 2  
Old 09-11-2013
sed 's|/\([0-9][0-9]*\)|FW_SLASH\1|g' infile

This User Gave Thanks to verdepollo For This Post:
# 3  
Old 09-11-2013
Or more short:
sed 's/\//FWD_SLASH/g' infile

# 4  
Old 09-11-2013
Originally Posted by disedorgue
Or more short:
sed 's/\//FWD_SLASH/g' infile

That would substitute the no-digit line, too.
# 5  
Old 09-12-2013
It's true, I'm attached specific case and not general Smilie
but, in this case:
sed 's|/\([0-9]\+\)|FW_SLASH\1|g' infile

work as verdepollo version, but both not work with example /0FOO/2BAR/2001

# 6  
Old 09-12-2013
Some sed versions support word-boundary anchors \< and \>
$ echo /0FOO/2BAR/2001 | sed 's|/\([0-9][0-9]*\)|FW_SLASH\1|g'
$ echo /0FOO/2BAR/2001 | sed 's|/\([0-9][0-9]*\>\)|FW_SLASH\1|g'

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