file:查看文件的类型
[root@redhat ~]# file * #查看当前目录下的所有文件类型 abc.sh: awk script, ASCII text abc.sh.bz2: bzip2 compressed data, block size = 900k ar_test: directory examples.desktop: UTF-8 Unicode text rec00001abc.sh.bz2: bzip2 compressed data, block size = 900k test: ASCII text test.bz2: bzip2 compressed data, block size = 900k [root@redhat ~]# file abc.sh #查看单个文件的文件类型 abc.sh: awk script, ASCII text root@tnak-VirtualBox:/home/tnak# file -z test.bz2 #查看压缩文件的内部信息 test.bz2: empty (bzip2 compressed data, block size = 900k)