大家好，又见面了，我是你们的朋友全栈君。
1.系统
1.1版本
uname -a 能确认是64位还是32位，其它的信息不多
[root@localhost ~]# uname -a
Linux localhost.localdomain 3.10.0-327.el7.x86_64 #1 SMP Thu Nov 19 22:10:57 UTC 2015 x86_64 x86_64 x86_64 GNU/Linuxmore /etc/*release 可以看到更多信息
[root@localhost ~]# more /etc/*release
::::::::::::::
/etc/centos-release
::::::::::::::
CentOS Linux release 7.2.1511 (Core)
::::::::::::::
/etc/os-release
::::::::::::::
NAME="CentOS Linux"
VERSION="7 (Core)"
ID="centos"
ID_LIKE="rhel fedora"
VERSION_ID="7"
PRETTY_NAME="CentOS Linux 7 (Core)"
ANSI_COLOR="0;31"
CPE_NAME="cpe:/o:centos:centos:7"
HOME_URL="https://www.centos.org/"
BUG_REPORT_URL="https://bugs.centos.org/"
CENTOS_MANTISBT_PROJECT="CentOS-7"
CENTOS_MANTISBT_PROJECT_VERSION="7"
REDHAT_SUPPORT_PRODUCT="centos"
REDHAT_SUPPORT_PRODUCT_VERSION="7"
::::::::::::::
/etc/redhat-release
::::::::::::::
CentOS Linux release 7.2.1511 (Core)
::::::::::::::
/etc/system-release
::::::::::::::
CentOS Linux release 7.2.1511 (Core)
1.2核数
cat /proc/cpuinfo | grep name | cut -f2 -d: | uniq -c
[root@localhost ~]# cat /proc/cpuinfo | grep name | cut -f2 -d: | uniq -c
1 Intel(R) Core(TM) i5-6300HQ CPU @ 2.30GHz1个逻辑CPU，i5型等信息
[root@localhost ~]# cat /proc/cpuinfo | grep name | cut -f2 -d: | uniq -c
8 Intel(R) Xeon(R) CPU E7-4820 v2 @ 2.00GHz 8个逻辑CPU
cat /proc/cpuinfo | grep physical | uniq -c
[root@localhost ~]# cat /proc/cpuinfo | grep physical | uniq -c 1 physical id : 0 1 address sizes : 42 bits physical, 48 bits virtual实际上是一颗一核的CPU
[root@localhost ~]# cat /proc/cpuinfo | grep physical | uniq -c
1 physical id : 0
1 address sizes : 40 bits physical, 48 bits virtual
1 physical id : 0
1 address sizes : 40 bits physical, 48 bits virtual
1 physical id : 0
1 address sizes : 40 bits physical, 48 bits virtual
1 physical id : 0
1 address sizes : 40 bits physical, 48 bits virtual
1 physical id : 0
1 address sizes : 40 bits physical, 48 bits virtual
1 physical id : 0
1 address sizes : 40 bits physical, 48 bits virtual
1 physical id : 0
1 address sizes : 40 bits physical, 48 bits virtual
1 physical id : 0
1 address sizes : 40 bits physical, 48 bits virtual 由8个1核的CPU组成8核
cat /proc/cpuinfo可以看到更为详细的信息
[root@localhost ~]# cat /proc/cpuinfoprocessor : 0vendor_id : GenuineIntelcpu family : 6model : 94model name : Intel(R) Core(TM) i5-6300HQ CPU @ 2.30GHzstepping : 3microcode : 0x74cpu MHz : 2304.004cache size : 6144 KBphysical id : 0siblings : 1core id : 0cpu cores : 1apicid : 0initial apicid : 0fpu : yesfpu_exception : yescpuid level : 22wp : yesflags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts mmx fxsr sse sse2 ss syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts nopl xtopology tsc_reliable nonstop_tsc aperfmperf eagerfpu pni pclmulqdq ssse3 fma cx16 pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand hypervisor lahf_lm abm 3dnowprefetch ida arat epb pln pts dtherm hwp hwp_noitfy hwp_act_window hwp_epp fsgsbase tsc_adjust bmi1 hle avx2 smep bmi2 invpcid rtm rdseed adx smap xsaveopt xsavec xgetbv1 xsavesbogomips : 4608.00clflush size : 64cache_alignment : 64address sizes : 42 bits physical, 48 bits virtualpower management:1.3运行模式
getconf LONG_BIT CPU运行在多少位模式下
[root@localhost ~]# getconf LONG_BIT
64如果是32，说明当前CPU运行在32bit模式下, 但不代表CPU不支持64bit
cat /proc/cpuinfo | grep flags | grep ‘ lm ‘ | wc -l 是否支持64位
[root@localhost ~]# cat /proc/cpuinfo | grep flags | grep ' lm ' | wc -l
1结果大于0, 说明支持64bit计算. lm指long mode, 支持lm则是64bit
1.4计算机名
hostname
[root@localhost ~]# hostname
localhost.localdomain1.5.查看环境变量
env
[root@localhost ~]# env
XDG_SESSION_ID=4
HOSTNAME=localhost.localdomain
SELINUX_ROLE_REQUESTED=
TERM=vt100
SHELL=/bin/bash
HISTSIZE=1000
SSH_CLIENT=192.168.174.1 58896 22
SELINUX_USE_CURRENT_RANGE=
SSH_TTY=/dev/pts/0
USER=root1.6系统允许多长时间了/负载数
uptime
[root@localhost proc]# uptime
10:55:01 up 1:28, 2 users, load average: 0.00, 0.01, 0.051.当前时间10:55:01
2.系统运行了多少时间,1:28（1小时28分)
3.多少个用户,2 users
4.平均负载：0.00, 0.01, 0.05，最近1分钟、5分钟、15分钟系统的负载
直接查看平均负载情况 cat /proc/loadavg
[root@localhost proc]# cat /proc/loadavg
0.00 0.01 0.05 4/524 7152 除了前3个数字表示平均进程数量外，后面的1个分数，分母表示系统进程总数，分子表示正在运行的进程数；最后一个数字表示最近运行的进程ID
2.资源
2.1内存
cat /proc/meminfo内存的详细信息
[root@localhost proc]# cat /proc/meminfo
MemTotal: 1001332 kB
MemFree: 99592 kB
MemAvailable: 420940 kB
Buffers: 1064 kB
Cached: 405292 kB
SwapCached: 0 kB
Active: 412548 kB
Inactive: 250192 kB
Active(anon): 205264 kB
Inactive(anon): 58460 kB
Active(file): 207284 kB
Inactive(file): 191732 kB
Unevictable: 0 kB
Mlocked: 0 kB
SwapTotal: 2097148 kB
SwapFree: 2097140 kB
Dirty: 0 kB
Writeback: 0 kB
AnonPages: 256416 kB
Mapped: 103344 kB
Shmem: 7340 kB
Slab: 126408 kB
SReclaimable: 69912 kB
SUnreclaim: 56496 kB
KernelStack: 10416 kB
PageTables: 15520 kB
NFS_Unstable: 0 kB
Bounce: 0 kB
WritebackTmp: 0 kB
CommitLimit: 2597812 kB
Committed_AS: 1578872 kB
VmallocTotal: 34359738367 kB
VmallocUsed: 170756 kB
VmallocChunk: 34359564288 kB
HardwareCorrupted: 0 kB
AnonHugePages: 75776 kB
HugePages_Total: 0
HugePages_Free: 0
HugePages_Rsvd: 0
HugePages_Surp: 0
Hugepagesize: 2048 kB
DirectMap4k: 73600 kB
DirectMap2M: 974848 kB
DirectMap1G: 0 kB MemTotal总内存，MemFree可用内存
free -m(-m，单位是m，如果是-g，单位是g）查看可用内存
[root@localhost proc]# free -m total used free shared buff/cache availableMem: 977 360 97 7 520 411Swap: 2047 0 2047空闲内存total-used=free+buff/cache
我们通过free命令查看机器空闲内存时，会发现free的值很小。这主要是因为，在linux中有这么一种思想，内存不用白不用，因此它尽可能的cache和buffer一些数据，以方便下次使用。但实际上这些内存也是可以立刻拿来使用的。
3.磁盘和分区
3.1查看各分区使用情况
df -h
[root@localhost ~]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/centos-root 45G 22G 24G 48% /
devtmpfs 906M 0 906M 0% /dev
tmpfs 921M 96K 921M 1% /dev/shm
tmpfs 921M 1004K 920M 1% /run
tmpfs 921M 0 921M 0% /sys/fs/cgroup
/dev/sda1 497M 195M 303M 40% /boot
tmpfs 185M 0 185M 0% /run/user/1001
tmpfs 185M 0 185M 0% /run/user/0
[root@localhost ~]# 3.2查看指定目录的大小
du -sh <目录名>
[root@localhost ~]# du -sh /root
1.2G /root某个文件夹下的文件夹和文件大小
du -h –max-depth=1 /opt/
[root@localhost /]# du -h --max-depth=1 /opt/
39M /opt/openssh-7.5p1
40M /opt/3.3查看所有分区
fdisk -l
[root@localhost proc]# fdisk -l
磁盘 /dev/sda：32.2 GB, 32212254720 字节，62914560 个扇区
Units = 扇区 of 1 * 512 = 512 bytes
扇区大小(逻辑/物理)：512 字节 / 512 字节
I/O 大小(最小/最佳)：512 字节 / 512 字节
磁盘标签类型：dos
磁盘标识符：0x000a0cd4
设备 Boot Start End Blocks Id System
/dev/sda1 * 2048 1026047 512000 83 Linux
/dev/sda2 1026048 62914559 30944256 8e Linux LVM
磁盘 /dev/mapper/centos-root：29.5 GB, 29490151424 字节，57597952 个扇区
Units = 扇区 of 1 * 512 = 512 bytes
扇区大小(逻辑/物理)：512 字节 / 512 字节
I/O 大小(最小/最佳)：512 字节 / 512 字节
磁盘 /dev/mapper/centos-swap：2147 MB, 2147483648 字节，4194304 个扇区
Units = 扇区 of 1 * 512 = 512 bytes
扇区大小(逻辑/物理)：512 字节 / 512 字节
I/O 大小(最小/最佳)：512 字节 / 512 字节
磁盘 /dev/mapper/centos-docker--poolmeta：33 MB, 33554432 字节，65536 个扇区
Units = 扇区 of 1 * 512 = 512 bytes
扇区大小(逻辑/物理)：512 字节 / 512 字节
I/O 大小(最小/最佳)：512 字节 / 512 字节
磁盘 /dev/mapper/docker-253:0-101330881-pool：107.4 GB, 107374182400 字节，209715200 个扇区
Units = 扇区 of 1 * 512 = 512 bytes
扇区大小(逻辑/物理)：512 字节 / 512 字节
I/O 大小(最小/最佳)：65536 字节 / 65536 字节
3.4查看所有交换分区
swapon -s
[root@localhost proc]# swapon -s
文件名 类型 大小 已用 权限
/dev/dm-1 partition 2097148 8 -14.网络
4.1查看所有网络接口的属性
ifconfig
[root@localhost proc]# ifconfig
docker0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
inet 172.17.0.1 netmask 255.255.0.0 broadcast 0.0.0.0
ether 02:42:e1:b8:a5:4f txqueuelen 0 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.174.129 netmask 255.255.255.0 broadcast 192.168.174.255
inet6 fe80::20c:29ff:fe50:b3b4 prefixlen 64 scopeid 0x20<link>
ether 00:0c:29:50:b3:b4 txqueuelen 1000 (Ethernet)
RX packets 28649 bytes 38411280 (36.6 MiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 8937 bytes 1226914 (1.1 MiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 0 (Local Loopback)
RX packets 4 bytes 340 (340.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 4 bytes 340 (340.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
virbr0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
inet 192.168.122.1 netmask 255.255.255.0 broadcast 192.168.122.255
ether 00:00:00:00:00:00 txqueuelen 0 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
4.2 带宽
ethtool 网卡名
[root@localhost php-tomcat-base]# ethtool ens192
Settings for ens192:
Supported ports: [ TP ]
Supported link modes: 1000baseT/Full
10000baseT/Full
Supported pause frame use: No
Supports auto-negotiation: No
Advertised link modes: Not reported
Advertised pause frame use: No
Advertised auto-negotiation: No
Speed: 10000Mb/s
Duplex: Full
Port: Twisted Pair
PHYAD: 0
Transceiver: internal
Auto-negotiation: off
MDI-X: Unknown
Supports Wake-on: uag
Wake-on: d
Link detected: yesSpeed: 10000Mb/s
Duplex: Full
Port: Twisted Pair
PHYAD: 0
Transceiver: internal
Auto-negotiation: off
MDI-X: Unknown
Supports Wake-on: uag
Wake-on: d
Link detected: yes 看Speed
4.3查看路由表
route -n
[root@localhost proc]# route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 192.168.174.2 0.0.0.0 UG 100 0 0 eth0
172.17.0.0 0.0.0.0 255.255.0.0 U 0 0 0 docker0
192.168.122.0 0.0.0.0 255.255.255.0 U 0 0 0 virbr0
192.168.174.0 0.0.0.0 255.255.255.0 U 100 0 0 eth0
[root@localhost proc]# 4.4查看所有监听端口
netstat -lntp
[root@localhost ~]# netstat -lntp
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
tcp 0 0 0.0.0.0:111 0.0.0.0:* LISTEN 743/rpcbind
tcp 0 0 0.0.0.0:80 0.0.0.0:* LISTEN 1740/nginx: master
tcp 0 0 0.0.0.0:81 0.0.0.0:* LISTEN 1740/nginx: master
tcp 0 0 192.168.122.1:53 0.0.0.0:* LISTEN 2194/dnsmasq
tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 1543/sshd
tcp 0 0 127.0.0.1:631 0.0.0.0:* LISTEN 12610/cupsd
tcp 0 0 0.0.0.0:40536 0.0.0.0:* LISTEN 19964/rpc.statd
tcp 0 0 127.0.0.1:25 0.0.0.0:* LISTEN 2133/master
tcp6 0 0 :::111 :::* LISTEN 743/rpcbind
tcp6 0 0 :::81 :::* LISTEN 1740/nginx: master
tcp6 0 0 :::22 :::* LISTEN 1543/sshd
tcp6 0 0 ::1:631 :::* LISTEN 12610/cupsd
tcp6 0 0 ::1:25 :::* LISTEN 2133/master
tcp6 0 0 :::35420 :::* LISTEN 19964/rpc.statd
[root@localhost ~]# 4.5查看所有已经建立的连接
netstat -antp
[root@localhost ~]# netstat -antp
Active Internet connections (servers and established)
Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
tcp 0 0 0.0.0.0:111 0.0.0.0:* LISTEN 743/rpcbind
tcp 0 0 0.0.0.0:80 0.0.0.0:* LISTEN 1740/nginx: master
tcp 0 0 0.0.0.0:81 0.0.0.0:* LISTEN 1740/nginx: master
tcp 0 0 192.168.122.1:53 0.0.0.0:* LISTEN 2194/dnsmasq
tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 1543/sshd
tcp 0 0 127.0.0.1:631 0.0.0.0:* LISTEN 12610/cupsd
tcp 0 0 0.0.0.0:40536 0.0.0.0:* LISTEN 19964/rpc.statd
tcp 0 0 127.0.0.1:25 0.0.0.0:* LISTEN 2133/master
tcp 0 0 172.31.4.233:22 121.34.147.13:57190 ESTABLISHED 29540/sshd: cavan [
tcp 0 0 172.31.4.233:22 121.34.147.13:54544 ESTABLISHED 27077/sshd: cavan [
tcp 0 96 172.31.4.233:22 219.137.32.66:60645 ESTABLISHED 30315/sshd: root@pt
tcp 0 0 172.31.4.233:22 121.34.147.13:56319 ESTABLISHED 28703/sshd: cavan [
tcp6 0 0 :::111 :::* LISTEN 743/rpcbind
tcp6 0 0 :::81 :::* LISTEN 1740/nginx: master
tcp6 0 0 :::22 :::* LISTEN 1543/sshd
tcp6 0 0 ::1:631 :::* LISTEN 12610/cupsd
tcp6 0 0 ::1:25 :::* LISTEN 2133/master
tcp6 0 0 :::35420 :::* LISTEN 19964/rpc.statd
[root@localhost ~]#
4.6 某端口使用情况
lsof -i:端口号
[root@localhost mysql]# lsof -i:22
COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
sshd 1150 root 3u IPv4 18264 0t0 TCP *:ssh (LISTEN)
sshd 1150 root 4u IPv6 18273 0t0 TCP *:ssh (LISTEN)
sshd 2617 root 3u IPv4 20437 0t0 TCP localhost.localdomain:ssh->192.168.174.1:60426 (ESTABLISHED)
[root@localhost mysql]# 或者
netstat -apn|grep 端口号
[root@localhost mysql]# netstat -apn|grep 22
tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 1150/sshd
tcp 0 96 192.168.174.136:22 192.168.174.1:60426 ESTABLISHED 2617/sshd: root@pts
tcp6 0 0 :::22 :::* LISTEN 1150/sshd
5.进程
5.1查看所有进程
ps -ef,使用ps -ef|gerp tomcat过滤
[root@localhost ~]# ps -ef
UID PID PPID C STIME TTY TIME CMD
root 1 0 0 09:26 ? 00:00:03 /usr/lib/systemd/systemd --switched-root --system --deserialize 21
root 2 0 0 09:26 ? 00:00:00 [kthreadd]
root 3 2 0 09:26 ? 00:00:00 [ksoftirqd/0]
root 6 2 0 09:26 ? 00:00:00 [kworker/u256:0]
root 7 2 0 09:26 ? 00:00:00 [migration/0]
root 8 2 0 09:26 ? 00:00:00 [rcu_bh]
root 9 2 0 09:26 ? 00:00:00 [rcuob/0]
root 10 2 0 09:26 ? 00:00:00 [rcuob/1]
root 11 2 0 09:26 ? 00:00:00 [rcuob/2]
root 12 2 0 09:26 ? 00:00:00 [rcuob/3]
root 13 2 0 09:26 ? 00:00:00 [rcuob/4]
root 14 2 0 09:26 ? 00:00:00 [rcuob/5]
root 15 2 0 09:26 ? 00:00:00 [rcuob/6]
root 16 2 ps -aux可以看到进程占用CPU,内存情况
[root@localhost ~]# ps -aux
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
root 1 0.0 0.6 126124 6792 ? Ss 09:26 0:03 /usr/lib/systemd/systemd --switched-root --system --deserialize 21
root 2 0.0 0.0 0 0 ? S 09:26 0:00 [kthreadd]
root 3 0.0 0.0 0 0 ? S 09:26 0:00 [ksoftirqd/0]
root 6 0.0 0.0 0 0 ? S 09:26 0:00 [kworker/u256:0]
root 7 0.0 0.0 0 0 ? S 09:26 0:00 [migration/0]
root 8 0.0 0.0 0 0 ? S 09:26 0:00 [rcu_bh]
root 9 0.0 0.0 0 0 ? S 09:26 0:00 [rcuob/0]
root 10 0.5.2实时显示进程状态
top
[root@localhost ~]# top
top - 11:29:02 up 2:02, 2 users, load average: 0.12, 0.04, 0.05
Tasks: 408 total, 2 running, 406 sleeping, 0 stopped, 0 zombie
%Cpu(s): 1.3 us, 0.3 sy, 0.0 ni, 98.3 id, 0.0 wa, 0.0 hi, 0.0 si, 0.0 st
KiB Mem : 1001332 total, 92184 free, 370332 used, 538816 buff/cache
KiB Swap: 2097148 total, 2097140 free, 8 used. 419124 avail Mem
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
3001 gdm 20 0 1419364 122996 45860 S 1.0 12.3 0:06.50 gnome-shell
276 root 20 0 0 0 0 S 0.3 0.0 0:09.72 kworker/0:1
3765 root 20 0 142864 5128 3876 S 0.3 0.5 0:00.77 sshd
7740 root 20 0 146452 2384 1432 R 0.3 0.2 0:00.17 top
1 root 20 0 126124 6792 3912 S 0.0 0.7 0:03.58 systemd
2 root 20 0 0 0 0 S 0.0 0.0 0:00.03 kthreadd
3 root 20 0 0 0 0 S 0.0 0.0 0:00.37 ksoftirqd/0
6 root 20 0 0 0 0 S 0.0 0.0 0:00.39 kworker/u256:0
7 root rt 0 0 0 0 S 0.0 0.0 0:00.00 migration/0
8 root 20 0 0 0 0 S 0.0 0.0 0:00.00 rcu_bh
9 root 20 0 0 0 0 S 0.0 0.0 0:00.00 rcuob/0
10 root 20 0 0 0 0 S 0.0 0.0 0:00.00 rcuob/1
11 root 20 0 0
6.用户
6.1查看活动用户
w
[root@localhost ~]# w
11:32:36 up 72 days, 20:50, 3 users, load average: 0.00, 0.01, 0.05
USER TTY FROM LOGIN@ IDLE JCPU PCPU WHAT
cavan pts/0 121.34.147.13 09:47 1:14m 0.17s 0.17s sshd: cavan [priv]
root pts/1 219.137.32.66 11:19 4.00s 0.05s 0.00s w
cavan pts/3 121.34.147.13 10:14 20:44 0.38s 0.11s vim Dockerfile
[root@localhost ~]# 6.2查看指定用户的信息
id <用户名>
[root@localhost ~]# id root
uid=0(root) gid=0(root) groups=0(root)
[root@localhost ~]# id cavan
uid=1001(cavan) gid=1001(cavan) groups=1001(cavan)
[root@localhost ~]#
6.3查看用户登录日志
last
[root@localhost 1]# last
root pts/0 192.168.174.1 Mon Oct 24 09:51 still logged in
(unknown :0 :0 Mon Oct 24 09:27 still logged in
reboot system boot 3.10.0-327.el7.x Mon Oct 24 09:26 - 11:35 (02:09)
root pts/0 192.168.174.1 Fri Oct 21 09:41 - 18:44 (09:03)
(unknown :0 :0 Fri Oct 21 09:15 - 18:44 (09:28)
reboot system boot 3.10.0-327.el7.x Fri Oct 21 09:15 - 11:35 (3+02:20)
root pts/1 192.168.174.1 Thu Oct 20 10:05 - 18:13 (08:08)
root pts/0 6.4查看系统所有用户
cut -d: -f1 /etc/passwd
[root@localhost ~]# cut -d: -f1 /etc/passwd
root
bin
daemon
adm
lp
sync
shutdown
halt
mail
operator
games
ftp
nobody
dbus
polkitd
abrt
unbound
colord
usbmuxd
ntp
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