LANG="ja_JP.UTF-8"
    ↓
LANG="ja_JP.eucJP"

PAGER /usr/bin/less -is
    ↓
(FC2の場合)
PAGER /usr/bin/lv
(CentOS4の場合、lvが初期状態では入っていないのでlv???.tar.gzを入手してinstallする。)
PAGER /usr/local/bin/lv

NETWORKING=yes
#HOSTNAME=localhost.localdomain
   ↓(決めたホスト名(この例ではhost_pc)に書き変える)
HOSTNAME=host_pc

#127.0.0.1              localhost.localdomain localhost
  ↓(決めたホスト名(この例ではhost_pc)を追記する)
127.0.0.1       host_pc localhost.localdomain localhost

[hogeuser]$ /sbin/ifconfig
eth0  Link encap:Ethernet  HWaddr xx:xx:xx:xx:xx:xx
      inet addr:xxx.xxx.xxx.xxx  Bcast:xxx.xxx.xxx.xxx  Mask:255.255.255.0
........

lo    Link encap:Local Loopback
      inet addr:127.0.0.1  Mask:255.0.0.0
........

DEVICE=eth0
BOOTPROTO=dhcp
HWADDR=xx:xx:xx:xx:xx:xx
ONBOOT=yes
TYPE=Ethernet

DEVICE=eth0
BOOTPROTO=none
IPADDR=192.168.1.2
NETMASK=255.255.255.0 (←サブネットマスクを書く)
HWADDR=xx:xx:xx:xx:xx:xx (←eth0のMAC address)
ONBOOT=yes
TYPE=Ethernet
USERCTL=no
PEERDNS=yes
GATEWAY=192.168.1.1 (←ルータのアドレスを書く)
IPV6INIT=no

[hogeuser]# /etc/rc.d/init.d/network restart
......

DEVICE=eth0
BOOTPROTO=dhcp
IPADDR=192.168.1.2
NETMASK=255.255.255.0
HWADDR=xx:xx:xx:xx:xx:xx
ONBOOT=yes
TYPE=Ethernet
USERCTL=no
PEERDNS=yes
GATEWAY=192.168.1.1
IPV6INIT=no

[hogeuser]# /etc/rc.d/init.d/network restart
......

[hogeuser]# /usr/sbin/system-config-network-gui

[hogeuser]$ nmap localhost

Starting nmap........
........
Port      State   Service
22/tcp    open    ssh
....
513/tcp   open    login
515/tcp   open    printer
6000/tcp  open    X11
....<
Nmap run completed -- ....

(全てを表示)
pagerになっているので"q"で終了
[hogeuser]$ /usr/bin/systemctl --full list-unit-files
UNIT FILE                                   STATE   
proc-sys-fs-binfmt_misc.automount           static  
dev-hugepages.mount                         static  
dev-mqueue.mount                            static  
proc-fs-nfsd.mount                          static  
proc-sys-fs-binfmt_misc.mount               static  
sys-fs-fuse-connections.mount               static  
sys-kernel-config.mount                     static  
sys-kernel-debug.mount                      static  
tmp.mount                                   disabled
var-lib-nfs-rpc_pipefs.mount                static  
brandbot.path                               disabled
cups.path                                   enabled 
....
timers.target                               static  
umount.target                               static  
vsftpd.target                               disabled
chrony-dnssrv@.timer                        disabled
mdadm-last-resort@.timer                    static  
systemd-readahead-done.timer                static  
systemd-tmpfiles-clean.timer                static  
unbound-anchor.timer                        disabled

369 unit files listed.
lines 323-372/372 (END)

(全てを表示)
[hogeuser]$ /sbin/chkconfig --list
....
xfs                 0:off 1:off 2:on  3:on  4:on  5:on  6:off
microcode_ctl       0:off 1:off 2:off 3:off 4:off 5:off 6:off
lm_sensors          0:off 1:off 2:on  3:on  4:on  5:on  6:off
rpcidmapd           0:off 1:off 2:off 3:on  4:on  5:on  6:off
snmpd               0:off 1:off 2:off 3:off 4:off 5:off 6:off
cups-config-daemon  0:off 1:off 2:off 3:off 4:on  5:off 6:off
diskdump            0:off 1:off 2:off 3:off 4:off 5:off 6:off
sshd                0:off 1:off 2:on  3:on  4:on  5:on  6:off
........

[hogeuser]$

(特定のサービスのみを表示)
[hogeuser]$ /sbin/chkconfig --list sshd

sshd               0:off 1:off 2:on  3:on  4:on  5:on  6:off

[hogeuser]$

[hogeuser]$ cd /etc/systemd/system/
[hogeuser]$ ls -l default.target
lrwxrwxrwx. 1 root root 36 xx月 xx xx:xx default.target -> /lib/systemd/system/graphical.target

[hogeuser]$ /usr/bin/systemctl get-default
graphical.target

[hogeuser]# /usr/bin/systemctl set-default [target name]

[hogeuser]# /usr/bin/systemctl set-default multi-user.target
Removed symlink /etc/systemd/system/default.target.
Created symlink from /etc/systemd/system/default.target to /usr/lib/systemd/system/multi-user.target.

[hogeuser]$ uname -a
Linux xxxxx 2.4..xx.xx xxxxxxxxxxxxxxxxxxxxxxxx

[hogeuser]$ lsb_release -a
LSB Version:    :XXXXXXXXXX XXXXXXXXXXXX XXXXXXXXXXX XXXXXXXXXXX
Distributor ID: CentOS
Description:    CentOS release 5.5 (Final)
Release:        5.5
Codename:       Final

[hogeuser]$ cat /etc/issue
CentOS release 5.5 (Final)
Kernel \r on an \m

[hogeuser]$ cat /etc/redhat-release
CentOS release 5.5 (Final)

[hogeuser]# date MMDDhhmmYY.ss

[hogeuser]# /sbin/hwclock -w