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7.2 SysV init systemd Loaded: loaded (/usr/lib/systemd/system/httpd.service; disabled) Active: active (running) since 2015-01-28 15:24:40 JST; 2s ago Process: 2945 ExecStop=/bin/kill -WINCH ${MAINPID} (code=exited, status=0/ SUCCESS) Main PID: 2950 (httpd) systemctl stop # systemctl stop httpd # systemctl status httpd httpd.service - The Apache HTTP Server Loaded: loaded (/usr/lib/systemd/system/httpd.service; disabled) Active: inactive (dead) 7.2.3 systemd systemctl list-unit-files # systemctl list-unit-files -t service systemctl chkconfig --list # systemctl list-unit-files -t service STATE enabled disabled static www.lpi.or.jp 200 (C) LPI-Japan
7 CentOS 7 7.2.4 systemctl list-units systemctl # systemctl list-units # systemctl -t service # systemctl -t service UNIT LOAD ACTIVE SUB DESCRIPTION abrt-ccpp.service loaded active exited Install ABRT coredump hook abrt-oops.service loaded active running ABRT kernel log watcher abrt-xorg.service loaded active running ABRT Xorg log watcher abrtd.service loaded active running ABRT Automated Bug Reporting alsa-state.service loaded active running Manage Sound Card State (rest atd.service loaded active running Job spooling tools kdump.service loaded failed failed Crash recovery kernel arming UNIT LOAD ACTIVE SUB DESCRIPTION systemd active inactive running exited ACTIVE active inactive --all LOAD systemctl mask masked ACTIVE failed kdump www.lpi.or.jp 201 (C) LPI-Japan
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Linux LPI-Japan 2015-04-16
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7 Linux Linux Linux OS Red
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LPIC Linux Web 1 1 W
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sato • 1 • 2 • 3
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i . . . . . . . . . . . . . . . .
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2.2 network NetworkManager . . . .
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4.1.10 umask . . . . . . . . . . .
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6.3.1 . . . . . . . . . . . . . .
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1.1 fined_r:unconfined_t:s0-s0:c0.
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1.1 # passwd suzuki suzuki : su
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1.2 1.2.1 1 () # id suzuki ui
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1.2 # id suzuki uid=501(suzuki) gi
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1.3 $ ll 0 -rw-rw-r--. 1 suzuki s
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1.3 $ chmod u-x testdir $ ls -l
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1.3 Account expires : never Minimu
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1.3 drwx------. 26 sato sato 4096
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1.4 SSH 1.4.2 SSH CentOS OpenSSH
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1.4 SSH RX packets:19972 errors:0
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1.4 SSH 1.4.8 SSH SSH Linux ssh-
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1.4 SSH ~/.ssh id_rsa.pub id_r
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1.4 SSH authorized_keys SELinux
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1.4 SSH [sshuser@client ~]$ ssh ss
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1.4 SSH 1.1 IP IP SSH OK 2.
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1.4 SSH 1.4 1.4.15 Tera Term T
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1.4 SSH 1.7 From: TeraTerm SSH SC
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1.5 root OpenSSH /etc/ssh/sshd_con
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1.5 root 1.5.3 su su root root
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1.5 root #2) Think before you type
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1.5 root 28608 pts/0 S 0:00 su - h
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2.1 TX packets:45 errors:0 dropped
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2.1 ARP ARP ip neighbor show ar
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2.1 udp 0 0 0.0.0.0:111 0.0.0.0:
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2.1 Transceiver: internal Auto-neg
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2.3 # chkconfig network on # chkco
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2.3 2.3.5 /etc/services /etc/ser
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2.4 iptables NAPT(IP ) IP 1 IP
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2.4 iptables INPUT OUTPUT FORWARD
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2.4 iptables # system-config-firew
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2.5 DHCP 5. system-config-firewa
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2.5 DHCP range 192.168.0.200 192.1
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2.5 DHCP 2.5.8 Windows DHCP Wind
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2.5 DHCP 2.7 TCP/IPv4 4 (TCP/IP
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2.5 DHCP 2.10 IP IP DNS 2.5.9
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3 3.1 OS OS 1. 2. BIOS 3. GRU
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3 timeout=5 splashimage=(hd0,0)/g
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3 ..- 2.6.32-504.el6.x86_64 3
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3 0 1 2 3 4 5 6 0 0 #
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3 3.1.6 runlevel # runlevel N
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3 httpd : [ OK ] httpd # servic
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3 5 rc5.d # ls /etc/rc.d init
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3 3.3 cron Linux cron 3.3.1 c
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3 0-59 0-23 1-31 1-12 0-70
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3 3.3.7 cron crontab -r cron #
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3 # ls /etc/cron.hourly/ 0anacron
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3 #period in days delay in minute
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3 # ntpq -p remote refid st t whe
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3 3.4.6 NTP NTP NTP NTP /etc/
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4.1 # id sato uid=500(sato) gid=50
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4.1 [sato@server ~]$ umask 0002 um
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4.1 /etc/profile # cat /etc/bashr
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4.1 [sato@server ~]$ write suzuki
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4.2 POSIX ACL 4.2.2 ACL ACL getfa
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4.2 POSIX ACL # yum install samba S
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4.2 POSIX ACL 4.2 3. 4.3 sato
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4.2 POSIX ACL Windows samba_acl_te
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4.3 SELinux 4.3 SELinux SELinux Li
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4.3 SELinux /etc/selinux/config SE
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4.3 SELinux 4.3.7 Boolean SELinux
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4.3 SELinux 4.8 Forbidden root /va
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4.4 LVM PV PV 8E Linux /dev/sd
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4.4 LVM lvcreate lvcreate -L -n
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4.4 LVM # df /mnt/LVMtest/ Filesys
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4.5 4.5 4.5.1 CD DVD
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4.5 4.5.5 tar Tape Archiver tar
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4.5 # dd if=/dev/sdb of=/dev/sdc 2
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4.5 -0 0 0 -u /etc/dumpdates
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4.5 efi symvers-2.6.32-504.el6.x86
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5 5.1 Linux Linux Linux 1
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5 enabled 0 yum --enablerepo
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5 ∗ base: ftp.nara.wide.ad.jp
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Page 169 and 170: 5 # ln -s /media/CentOS_6.6_Final
Page 171 and 172: 5 PID USER PR NI VIRT RES SHR S %
Page 173 and 174: 5 5.2.3 vmstat vmstat CPU vmst
Page 175 and 176: 5 # iostat Linux 2.6.32-504.el6.x
Page 177 and 178: 5 dm-0 0.00 0.00 1.17 5.33 41.92
Page 179 and 180: 5 # sar -f /var/log/sa/sa22 Linux
Page 181 and 182: 5 Detail Low0Med5High10 Service
Page 183 and 184: 5 # logwatch --print ############
Page 185 and 186: 6 6.1 OS 6.1.1 CentOS /var/
Page 187 and 188: 6 syslogd 6.1.5 syslog facil
Page 189 and 190: 6 6.1.7 - Y * @ IP UDP
Page 191 and 192: 6 -A INPUT -j REJECT --reject-wit
Page 193 and 194: 6 $ModLoad TCP $InputTCPServerRu
Page 195 and 196: 6 syslogrsyslog ```shell-session
Page 197 and 198: 6 extension .baksome.log some.
Page 199 and 200: 6 prerotate firstaction postrot
Page 201 and 202: 6 • netstat • tcpdump • Wir
Page 203 and 204: 6 6.2.4 tcpdump GUI Wiresh
Page 205 and 206: 6 Wireshark Network Analyzer # wi
Page 207 and 208: 6 6.3 http Filter:httpEnter Hy
Page 209 and 210: 6 1. CentOS DVD BIOS DVD 2. R
Page 211 and 212: 6 6.8 4. /mnt/sysimage Read-On
Page 213 and 214: 6 6.11 shell 7. bash /mnt/sysim
Page 215 and 216: 7 CentOS 7 7.1 CentOS 7 CentOS
Page 217: 7 CentOS 7 systemctl status sys
Page 221 and 222: 7 CentOS 7 7.2.8 systemctl enabl
Page 223 and 224: 7 CentOS 7 2. /etc/systemd/system
Page 225 and 226: 7 CentOS 7 1 28 17:29:04 centos7.
Page 227 and 228: 7 CentOS 7 sources: services: dhc
Page 229 and 230: 7 CentOS 7 7.1 GUI NetworkManag
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