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[v_act]格式：systemctl [OPTIONS…] COMMAND [NAME…]
服务相关：
systemctl status name.service：查看服务状态
systemctl start name.service：启动服务
systemctl stop name.service：停止服务
systemctl restart name.service：重启服务
systemctl list-units –type service –all：查看所有服务[/v_act]
systemctl status name.service：查看服务状态
[root@localhost ~]# systemctl status network.service
● network.service - LSB: Bring up/down networking
Loaded: loaded (/etc/rc.d/init.d/network)
Active: active (exited) since Thu 2017-11-09 14:27:56 CST; 2 months 7 days ago
Docs: man:systemd-sysv-generator(8)
Process: 1095 ExecStart=/etc/rc.d/init.d/network start (code=exited, status=0/SUCCESS)
Nov 09 14:27:55 localhost.localdomain systemd[1]: Starting LSB: Bring up/down networking...
Nov 09 14:27:56 localhost.localdomain network[1095]: Bringing up loopback interface: Could not load file '/etc/sysconfig/network-scripts/ifcfg-lo'
Nov 09 14:27:56 localhost.localdomain network[1095]: Could not load file '/etc/sysconfig/network-scripts/ifcfg-lo'
Nov 09 14:27:56 localhost.localdomain network[1095]: Could not load file '/etc/sysconfig/network-scripts/ifcfg-lo'
Nov 09 14:27:56 localhost.localdomain network[1095]: Could not load file '/etc/sysconfig/network-scripts/ifcfg-lo'
Nov 09 14:27:56 localhost.localdomain network[1095]: [ OK ]
Nov 09 14:27:56 localhost.localdomain network[1095]: Bringing up interface eno16777984: [ OK ]
Nov 09 14:27:56 localhost.localdomain systemd[1]: Started LSB: Bring up/down networking.systemctl start name.service：启动服务
systemctl stop name.service：停止服务
systemctl restart name.service：重启服务
systemctl list-units –type service –all：查看所有服务
[root@localhost ~]# systemctl list-units --type service --all
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-vmcore.service loaded inactive dead Harvest vmcores for ABRT
abrt-xorg.service loaded inactive dead ABRT Xorg log watcher
abrtd.service loaded active running ABRT Automated Bug Reporting Tool
auditd.service loaded active running Security Auditing Service
brandbot.service loaded inactive dead Flexible Branding Service
chronyd.service loaded active running NTP client/server
cpupower.service loaded inactive dead Configure CPU power related settings
crond.service loaded active running Command Scheduler
dbus.service loaded active running D-Bus System Message Bus
● display-manager.service not-found inactive dead display-manager.service
dracut-shutdown.service loaded inactive dead Restore /run/initramfs
ebtables.service loaded inactive dead Ethernet Bridge Filtering tables
emergency.service loaded inactive dead Emergency Shell
● exim.service not-found inactive dead exim.service
firewalld.service loaded active running firewalld - dynamic firewall daemon
getty@tty1.service loaded active running Getty on tty1
● ip6tables.service not-found inactive dead ip6tables.service
● iptables.service not-found inactive dead iptables.service
irqbalance.service loaded active running irqbalance daemon
kdump.service loaded active exited Crash recovery kernel arming
kmod-static-nodes.service loaded active exited Create list of required static device nodes for the current kernel
ldconfig.service loaded inactive dead Rebuild Dynamic Linker Cache
● libvirtd.service not-found inactive dead libvirtd.service
● livesys.service not-found inactive dead livesys.service
microcode.service loaded inactive dead Load CPU microcode update
network.service loaded active exited LSB: Bring up/down networking
NetworkManager-wait-online.service loaded inactive dead Network Manager Wait Online
NetworkManager.service loaded active running Network Manager
● ntpd.service not-found inactive dead ntpd.service
● ntpdate.service not-found inactive dead ntpdate.service
plymouth-quit-wait.service loaded inactive dead Wait for Plymouth Boot Screen to Quit
plymouth-quit.service loaded inactive dead Terminate Plymouth Boot Screen
plymouth-read-write.service loaded inactive dead Tell Plymouth To Write Out Runtime Data
plymouth-start.service loaded inactive dead Show Plymouth Boot Screen
polkit.service loaded active running Authorization Manager
postfix.service loaded active running Postfix Mail Transport Agent
rc-local.service loaded inactive dead /etc/rc.d/rc.local Compatibility
rescue.service loaded inactive dead Rescue Shell
rhel-autorelabel-mark.service loaded inactive dead Mark the need to relabel after reboot
rhel-autorelabel.service loaded inactive dead Relabel all filesystems, if necessary
rhel-configure.service loaded inactive dead Reconfigure the system on administrator request
rhel-dmesg.service loaded active exited Dump dmesg to /var/log/dmesg
rhel-import-state.service loaded active exited Import network configuration from initramfs
rhel-loadmodules.service loaded inactive dead Load legacy module configuration
rhel-readonly.service loaded active exited Configure read-only root support
rsyslog.service loaded active running System Logging Service
● sendmail.service not-found inactive dead sendmail.service
● sntp.service not-found inactive dead sntp.service
sshd-keygen.service loaded inactive dead OpenSSH Server Key Generation
sshd.service loaded active running OpenSSH server daemon
● syslog.service not-found inactive dead syslog.service
systemd-ask-password-console.service loaded inactive dead Dispatch Password Requests to Console
systemd-ask-password-plymouth.service loaded inactive dead Forward Password Requests to Plymouth
systemd-ask-password-wall.service loaded inactive dead Forward Password Requests to Wall
systemd-binfmt.service loaded inactive dead Set Up Additional Binary Formats
systemd-firstboot.service loaded inactive dead First Boot Wizard
systemd-fsck-root.service loaded inactive dead File System Check on Root Device
systemd-hwdb-update.service loaded inactive dead Rebuild Hardware Database
systemd-initctl.service loaded inactive dead /dev/initctl Compatibility Daemon
systemd-journal-catalog-update.service loaded inactive dead Rebuild Journal Catalog
systemd-journal-flush.service loaded active exited Flush Journal to Persistent Storage
systemd-journald.service loaded active running Journal Service
systemd-logind.service loaded active running Login Service
systemd-machine-id-commit.service loaded inactive dead Commit a transient machine-id on disk
systemd-modules-load.service loaded inactive dead Load Kernel Modules
● systemd-random-seed-load.service not-found inactive dead systemd-random-seed-load.service
systemd-random-seed.service loaded active exited Load/Save Random Seed
systemd-readahead-collect.service loaded inactive dead Collect Read-Ahead Data
systemd-readahead-done.service loaded inactive dead Stop Read-Ahead Data Collection
systemd-readahead-replay.service loaded inactive dead Replay Read-Ahead Data
systemd-reboot.service loaded inactive dead Reboot
systemd-remount-fs.service loaded active exited Remount Root and Kernel File Systems
systemd-shutdownd.service loaded inactive dead Delayed Shutdown Service
systemd-sysctl.service loaded active exited Apply Kernel Variables
● systemd-sysusers.service not-found inactive dead systemd-sysusers.service
systemd-tmpfiles-clean.service loaded inactive dead Cleanup of Temporary Directories
systemd-tmpfiles-setup-dev.service loaded active exited Create Static Device Nodes in /dev
systemd-tmpfiles-setup.service loaded active exited Create Volatile Files and Directories
systemd-udev-trigger.service loaded active exited udev Coldplug all Devices
systemd-udevd.service loaded active running udev Kernel Device Manager
systemd-update-done.service loaded inactive dead Update is Completed
systemd-update-utmp-runlevel.service loaded inactive dead Update UTMP about System Runlevel Changes
systemd-update-utmp.service loaded active exited Update UTMP about System Boot/Shutdown
systemd-user-sessions.service loaded active exited Permit User Sessions
systemd-vconsole-setup.service loaded active exited Setup Virtual Console
tuned.service loaded active running Dynamic System Tuning Daemon
wpa_supplicant.service loaded active running WPA Supplicant daemon
LOAD = Reflects whether the unit definition was properly loaded.
ACTIVE = The high-level unit activation state, i.e. generalization of SUB.
SUB = The low-level unit activation state, values depend on unit type.
89 loaded units listed.
To show all installed unit files use 'systemctl list-unit-files'.正文完
