egrep 警告：egrep 已过时；使用 egrep -E

Question

有人能帮我解决安装和启动 xampp 时遇到的问题吗，它显示了这个错误。（Arch-Linux）

sudo /opt/lampp/lampp start
XAMPP: Starting Apache...egrep: warning: egrep is obsolescent; using grep -E
egrep: warning: egrep is obsolescent; using grep -E
ok.
XAMPP: Starting MySQL...egrep: warning: egrep is obsolescent; using grep -E
ok.
XAMPP: Starting ProFTPD...egrep: warning: egrep is obsolescent; using grep -E
ok.