Rather than using a capture I think it might be simpler, since the OP mentions "end of a line" specifically, to just remove any non-pipe symbols anchored to the end of the string.

$ perl -Mstrict -Mwarnings -E '
my $str = q{RcdA|CON|139|||Kan|13|J|J|607|abc@gmail.com};
$str =~s{[^|]*$}{};
say $str;'
RcdA|CON|139|||Kan|13|J|J|607|
$

[download]

Cheers,

JohnGG

In reply to Re^2: how to remove a string from end of a line by johngg
in thread how to remove a string from end of a line by rpinnam

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