1246346269-d1989834dbd34170e1a29310191e9dcf63538368202ee72eae62d

's/\([0-9a-f]\

 {4,\}-\)\{4\}

Hi, not exactly.

Code:

[0-9a-f]\{4,\}-

means a sequence of 4 or more hexadecimale digits ( a-f being lowercase ) followed by a dash.

Code:

\(...\)\{4\}

means the sequence in escaped parentheses( "\(" and "\)" ) is repeated 4 times in its entirety.
So combing these two, 4 hexadecimal numbers followed by dashes of minimally 4 hexadecimal characters...

[0-9a-f]\{12\}//g'

Correct. the g of course means there can be multiple occurrences of the entire match per line.

 sed -e 's/\([0-9]\{10,\}-\)[0-9a-f]\{53\}//g'

Yes, that would match it. You could lose the comma if the first part is always exactly 10 digits, and also you do not need the escaped parentheses.

Code:

sed -e 's/[0-9]\{10\}-[0-9a-f]\{53\}//g'