in reply to Take digits from a string
See tr in Quote and Quote like Operators (it is quite a long way down the page so be patient :-).
$ perl -E ' > $str = q{nPqwe=2456fnraqe=13910feoption}; > ( $newStr = $str ) =~ tr{0-9}{}cd; > say $newStr;' 245613910 $
I hope this is helpful.
Cheers,
JohnGG
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