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Can somone explain me why the output of this small perl script is “foofoo” (and not “foo”) ?
#!/usr/bin/perl -w
my $var="a";
$var=~s/.*/foo/g;
print $var."\n";
Without the g option it works as I though it would but why is the global option matching pattern twice ?
In bash output is “foo” as expected
echo "a"|sed -e "s/.*/foo/g"
Any explanation would be appreciated.
First
.*matches the a, then it matches the empty string after the a. Maybe you want.+?