A bit shorter in XML::XSH2: 
open foo.xml ;
set /Listens/Listen/param[@name="SSLKeyStorePassword"]/@value 'BLABLA8
+' ;
save :b ;

[download]

It sets the first such node, i.e. it doesn't warn if there are more than one, but it can be easily extended: 

my $l = /Listens/Listen/param[@name="SSLKeyStorePassword"] ;
if (count($l) > 1) echo :e 'More than one node found' ;
set $l/@value 'BLABLA8' ;

[download]

map{substr$_->[0],$_->[1]||0,1}[\*||{},3],[[]],[ref qr-1,-,-1],[{}],[sub{}^*ARGV,3]

In reply to Re^2: XML replace password with a specific tag by choroba
in thread XML replace password with a specific tag by Bluesaka75

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