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my $resultLdapSearch = `ldapmodify -h \Q$ldap_server\E -D "cn=Director +y Manager" -w \Q$dir_mgr_pwd\E -f \Q$ldap_modify_file\E 2>&1`;
my $cmd = join ' ', map quotemeta, ( 'ldapmodify', ... ); my $resultLdapSearch = `$cmd 2>&1`;