Useful commands for getting information about your computers memory status and hard drives.

Posted: December 8, 2012. At: 4:59 PM. This was 5 years ago. Post ID: 4991
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This command used with grep will return information about your computers memory.

jason@jason-desktop:~/Documents$ cat /proc/meminfo | grep Total
MemTotal:       12219468 kB
SwapTotal:      70311928 kB
VmallocTotal:   34359738367 kB
CmaTotal:              0 kB
HugePages_Total:       0

If you want to list all of the hard disk partitions on your Linux system then this command is for you.

jason@darkstar ~ $ sudo /sbin/fdisk -l

Use this command on a Linux system to list all of the supported file-systems available for mounting partitions on your Linux system.

[email protected]:~/Documents$ cat /proc/filesystems

Use the fdisk -l command to list all partition names on your machine, if they are mounted or not.

jason@jason-desktop:~/Documents$ sudo fdisk -l | grep '^/dev' | cut -d' ' -f1
/dev/sda1
/dev/sda2
/dev/sda3
/dev/sda4
/dev/sda5
/dev/sda6
/dev/sdb1
/dev/sdc1
/dev/sdd1
/dev/sdd2
/dev/sdd3
/dev/sde1s

And the du command is very useful for returning how much disk space a certain directory takes up.

jason@jason-desktop:~/Documents$ du -h ~/Documents/ | tail -n 1
7.2G	/home/jason/Documents/

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