LS正解。
[root@DNS-1 ~]# file /sbin/ifconfig
/sbin/ifconfig: ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV), for GNU/Linux 2.6.9, dynamically linked (uses shared libs), for GNU/Linux 2.6.9, stripped
[root@DNS-1 ~]# file /sbin/ifdown
/sbin/ifdown: Bourne-Again shell script text executable
别管它黑猫白猫,两只逮着老鼠的都是好猫。