此命令特点：内容不分页直接全部显示，因此不适合用于大文件的查阅。
格式：cat [OPTION]… [FILE]…
-n：查看内容时标注行号，仅为便于查看，不属于文件内容。
-n：查看内容时标注行号，仅为便于查看，不属于文件内容。
[root@localhost ~]# cat anaconda-ks.cfg #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 # Keyboard layouts keyboard --vckeymap=us --xlayouts='us' # System language lang en_US.UTF-8 # Network information network --bootproto=static --device=eno16777736 --gateway=192.168.1.1 --ip=192.168.1.251 --nameserver=61.177.7.1 --netmask=255.255.255.0 --ipv6=auto --activate network --hostname=localhost.localdomain # Root password rootpw --iscrypted $6$JQBUj0EzywJPx59P$e8E3iEnmvoof0UxzNFq8xKgIVXTSCGPZ5b3DE0PJdFoESlvMcZTIXv8qnOlRiEc9AAhL0fqhHuKAnUkMZr5o61 # System services services --enabled="chronyd" # System timezone timezone Asia/Shanghai --isUtc # System bootloader configuration bootloader --append=" crashkernel=auto" --location=mbr --boot-drive=sda # Partition clearing information clearpart --none --initlabel # Disk partitioning information part /boot --fstype="xfs" --ondisk=sda --size=200 part / --fstype="xfs" --ondisk=sda --size=44999 part swap --fstype="swap" --ondisk=sda --size=6000 %packages @^minimal @compat-libraries @core @debugging @development chrony kexec-tools %end %addon com_redhat_kdump --enable --reserve-mb='auto' %end [root@localhost ~]#
-n：查看内容时标注行号，仅为便于查看，不属于文件内容。
[root@localhost ~]# cat -n anaconda-ks.cfg
1 #version=DEVEL
2 # System authorization information
3 auth --enableshadow --passalgo=sha512
4 # Use CDROM installation media
5 cdrom
6 # Use graphical install
7 graphical
8 # Run the Setup Agent on first boot
9 firstboot --enable
10 ignoredisk --only-use=sda
11 # Keyboard layouts
12 keyboard --vckeymap=us --xlayouts='us'
13 # System language
14 lang en_US.UTF-8
15
16 # Network information
17 network --bootproto=static --device=eno16777736 --gateway=192.168.1.1 --ip=192.168.1.251 --nameserver=61.177.7.1 --netmask=255.255.255.0 --ipv6=auto --activate
18 network --hostname=localhost.localdomain
19
20 # Root password
21 rootpw --iscrypted $6$JQBUj0EzywJPx59P$e8E3iEnmvoof0UxzNFq8xKgIVXTSCGPZ5b3DE0PJdFoESlvMcZTIXv8qnOlRiEc9AAhL0fqhHuKAnUkMZr5o61
22 # System services
23 services --enabled="chronyd"
24 # System timezone
25 timezone Asia/Shanghai --isUtc
26 # System bootloader configuration
27 bootloader --append=" crashkernel=auto" --location=mbr --boot-drive=sda
28 # Partition clearing information
29 clearpart --none --initlabel
30 # Disk partitioning information
31 part /boot --fstype="xfs" --ondisk=sda --size=200
32 part / --fstype="xfs" --ondisk=sda --size=44999
33 part swap --fstype="swap" --ondisk=sda --size=6000
34
35 %packages
36 @^minimal
37 @compat-libraries
38 @core
39 @debugging
40 @development
41 chrony
42 kexec-tools
43
44 %end
45
46 %addon com_redhat_kdump --enable --reserve-mb='auto'
47
48 %end
[root@localhost ~]#
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