Linux查看文件内容命令-cat

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提醒：本文最后更新于2019-07-17 19:37，文中所关联的信息可能已发生改变，请知悉！

[v_error]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。[/v_error]
[v_act]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。[/v_act]

[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 ~]#

正文完