6.设备系统备份

1.查看设备文件信息

Router#dir
Directory of flash0:/

    3  -rw-    33591768          <no date>  c1900-universalk9-mz.SPA.151-4.M4.bin
    2  -rw-       28282          <no date>  sigdef-category.xml
    1  -rw-      227537          <no date>  sigdef-default.xml

255744000 bytes total (221896413 bytes free)