Linux commands part-2
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free -h
To check ram/memory usage in server
-h –> Human readable format
By default free command will show the ram/memory usage in KB (Kilobytes)
ubuntu@manikandan:~$ free
total used free shared buff/cache available
Mem: 987264 334996 85924 1304 566344 472600
Swap: 0 0 0
free -h will show in MB or GB
ubuntu@manikandan:~$ free -h
total used free shared buff/cache available
Mem: 964Mi 327Mi 82Mi 1.0Mi 553Mi 461Mi
Swap: 0B 0B 0B
df -h
To check disk usage in server
-h –> Human readable format
By default df command will show the disk usage in KB (Kilobytes)
ubuntu@manikandan:~$ df
Filesystem 1K-blocks Used Available Use% Mounted on
tmpfs 98728 1276 97452 2% /run
/dev/sda1 47143192 7437908 39688900 16% /
tmpfs 493632 0 493632 0% /dev/shm
tmpfs 5120 0 5120 0% /run/lock
/dev/sda15 106858 6182 100677 6% /boot/efi
tmpfs 98724 4 98720 1% /run/user/1001
ubuntu@manikandan:~$ df -h
Filesystem Size Used Avail Use% Mounted on
tmpfs 97M 1.3M 96M 2% /run
/dev/sda1 45G 7.1G 38G 16% /
tmpfs 483M 0 483M 0% /dev/shm
tmpfs 5.0M 0 5.0M 0% /run/lock
/dev/sda15 105M 6.1M 99M 6% /boot/efi
tmpfs 97M 4.0K 97M 1% /run/user/1001