查看系统环境信息是生信技能树[生信爆款入门课程]linux shell编程部分Day15的讲到的一个重要知识点。为加深理解，现在对几个常用函数做下练习巩固。
1.常用命令简介
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2.操作练习
2.1 查看cpu信息
(base) Last10 00:47:55 ~
$ lscpu
Architecture: x86_64
CPU op-mode(s): 32-bit, 64-bit
Byte Order: Little Endian
CPU(s): 8
On-line CPU(s) list: 0-7
Thread(s) per core: 1
Core(s) per socket: 8
Socket(s): 1
NUMA node(s): 1
Vendor ID: GenuineIntel
CPU family: 6
Model: 94
Model name: Intel(R) Xeon(R) Gold 61xx CPU
Stepping: 3
CPU MHz: 2494.130
BogoMIPS: 4988.26
Hypervisor vendor: KVM
Virtualization type: full
L1d cache: 32K
L1i cache: 32K
L2 cache: 4096K
NUMA node0 CPU(s): 0-7
Flags: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ss ht syscall nx pdpe1gb rdtscp lm constant_tsc rep_good nopl 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 invpcid_single kaiser fsgsbase bmi1 hle avx2 smep bmi2 erms invpcid rtm mpx rdseed adx smap xsaveopt xsavec xgetbv1 arat
(base) Last10 00:51:48 ~
2.2 查看内存信息
(base) Last10 00:51:48 ~
$ free -h
total used free shared buff/cache available
Mem: 15G 2.0G 742M 153M 12G 12G
Swap: 0B 0B 0B
(base) Last10 00:53:57 ~
$
2.3 查看硬盘信息
$ df -h
Filesystem Size Used Avail Use% Mounted on
udev 7.8G 0 7.8G 0% /dev
tmpfs 1.6G 154M 1.5G 10% /run
/dev/vda1 50G 20G 28G 41% /
tmpfs 7.8G 28K 7.8G 1% /dev/shm
tmpfs 5.0M 0 5.0M 0% /run/lock
tmpfs 7.8G 0 7.8G 0% /sys/fs/cgroup
/dev/vdd1 493G 266G 202G 57% /trainee1
/dev/vdc1 493G 364G 104G 78% /trainee2
/dev/vde1 148G 91G 50G 65% /teach
tmpfs 1.6G 0 1.6G 0% /run/user/1003
tmpfs 1.6G 0 1.6G 0% /run/user/1027
tmpfs 1.6G 0 1.6G 0% /run/user/1011
tmpfs 1.6G 0 1.6G 0% /run/user/1057
tmpfs 1.6G 0 1.6G 0% /run/user/1074
tmpfs 1.6G 0 1.6G 0% /run/user/1080
tmpfs 1.6G 0 1.6G 0% /run/user/1103
tmpfs 1.6G 0 1.6G 0% /run/user/1101
tmpfs 1.6G 0 1.6G 0% /run/user/1093
tmpfs 1.6G 0 1.6G 0% /run/user/1091
tmpfs 1.6G 0 1.6G 0% /run/user/1125
tmpfs 1.6G 0 1.6G 0% /run/user/1131
tmpfs 1.6G 0 1.6G 0% /run/user/1172
tmpfs 1.6G 0 1.6G 0% /run/user/1173
tmpfs 1.6G 0 1.6G 0% /run/user/1157
tmpfs 1.6G 0 1.6G 0% /run/user/1207
tmpfs 1.6G 0 1.6G 0% /run/user/1226
tmpfs 1.6G 0 1.6G 0% /run/user/1213
tmpfs 1.6G 0 1.6G 0% /run/user/1217
(base) Last10 00:54:58 ~
$
4.查看文件大小
(base) Last10 00:56:24 ~
$ du -sh
4.4G
5.查看系统进程
$ top
top - 01:01:20 up 708 days, 14:10, 3 users, load aver
Tasks: 295 total, 1 running, 293 sleeping, 0 stoppe
%Cpu(s): 0.1 us, 0.1 sy, 0.0 ni, 99.8 id, 0.0 wa,
KiB Mem : 16300696 total, 671908 free, 2134460 used,
KiB Swap: 0 total, 0 free, 0 used.
PID USER PR NI VIRT RES SHR S %CPU
21802 root 20 0 510008 16292 3608 S 0.3
25990 Last10 20 0 92972 4564 3600 S 0.3
27998 Last10 20 0 40940 3752 3036 R 0.3
1 root 20 0 119956 5224 3188 S 0.0
2 root 20 0 0 0 0 S 0.0
3 root 20 0 0 0 0 S 0.0
5 root 0 -20 0 0 0 S 0.0
7 root 20 0 0 0 0 S 0.0
8 root 20 0 0 0 0 S 0.0
9 root rt 0 0 0 0 S 0.0
ctrl+c退出
htop
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