Check Server Configuration - Memory, Hard Disc, Processor in Ubuntu Linux
In Linux Ubuntu, you do not have any GUI mode to display the RAM detail and Hard Disk details. So you need the commands to view the server status in Ubuntu.
1. View RAM Details
You can view RAM details if different units like KB, MB, GB etc. The default is KB.
freeOutput:
| total | used | free | shared | buff/cache | available | |
| Mem: | 8173808 | 1148064 | 4727868 | 85688 | 2297876 | 6591952 |
| Swap: | 1048572 | 0 | 1048572 |
View in MB:
free -mOutput:
| total | used | free | shared | buff/cache | available | |
| Mem: | 7982 | 1096 | 4641 | 83 | 2244 | 6461 |
| Swap: | 1023 | 0 | 1023 |
Display RAM details with Units:
free -hOutput:
| total | used | free | shared | buff/cache | available | |
| Mem: | 7.8G | 1.0G | 4.6G | 83M | 2.2G | 6.3G |
| Swap: | 1.0G | 0B | 1.0G |
2. View Hard Disc Details
You can view RAM details if different units like KB, MB, GB or with the unit. The default is KB.
df -hOutput:
| Filesystem | Size | Used | Avail | Use% | Mounted on |
| udev | 3.9G | 0 | 3.9G | 0% | /dev |
| tmpfs | 799M | 8.6M | 790M | 2% | /run |
| /dev/xvda1 | 49G | 27G | 23G | 54% | / |
| tmpfs | 3.9G | 0 | 3.9G | 0% | /dev/shm |
| tmpfs | 5.0M | 0 | 5.0M | 0% | /run/lock |
You can view Total value by using:
df -h --total
To check hard disk memory used by and directory:
du -hs /path/to/directoryOutput:
21G /var/www/
3. View Processor Details
cpuinfo provides all the information about the CPUs.
cat /proc/cpuinfoOutput:
processor : 0
vendor_id : GenuineIntel cpu family : 6 model : 63 model name : Intel(R) Xeon(R) CPU E5-2676 v3 @ 2.40GHz stepping : 2 microcode : 0x3c cpu MHz : 2400.098 cache size : 30720 KB physical id : 0 siblings : 2
core id : 0 cpu cores : 2 apicid : 0 initial apicid : 0 fpu : yes fpu_exception : yes cpuid level : 13 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx rdtscp lm constant_tsc rep_good nopl xtopology 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 invpcid_single kaiser fsgsbase bmi1 avx2 smep bmi2 erms invpcid xsaveopt bugs : cpu_meltdown spectre_v1 spectre_v2 spec_store_bypass l1tf
bogomips : 4800.19 clflush size : 64 cache_alignment : 64 address sizes : 46 bits physical, 48 bits virtual power management: |