使用crash工具根据地址查看结构体的内容时，有时需要输入struct或者union，多少有些繁琐，crash提供了*命令，直接跟在结构体或者联合体的名字的前面即可。
示例:
- 带struct
crash> struct kmem_cache -x ffff893751f60800
struct kmem_cache {
cpu_slab = 0x5fc135c77b40,
flags = 0x40000000,
min_partial = 0x5,
size = 0x60,
- 不带struct
crash> *kmem_cache -x ffff893751f60800
struct kmem_cache {
cpu_slab = 0x5fc135c77b40,
flags = 0x40000000,
min_partial = 0x5,
size = 0x60,