head使用方法
head：查看文件头10行
[root@yang-1 ~]# head anaconda-ks.cfg.1
#version=DEVEL
# System authorization information
auth --enableshadow --passalgo=sha512
# Use CDROM installation media
cdrom
# Use graphical install
graphical
# Run the Setup Agent on first boot
firstboot --enable
ignoredisk --only-use=sda
head -n：指定文件头行号
[root@yang-1 ~]# head -n 2 anaconda-ks.cfg.1
#version=DEVEL
# System authorization information
[root@yang-1 ~]#
