CPU and HDD information - linux

Question

I searched but I found nothing for my problem.
I would like to have in Linux command line the information about the CPU usage and the local HDDs with formatting text like exactly as the examples below for my program.
These examples are command line outputs on MS-Windows.
I hope it is possible on Linux, too.
Thank you
wmic logicaldisk where drivetype=3 get caption,freespace,size
Caption FreeSpace Size
C: 135314194432 255953203200
D: 126288519168 128033222656
E: 336546639872 1000194015232
F: 162184503296 1000194015232
wmic cpu get loadpercentage
LoadPercentage
4

Answer 1

You won't find anything exactly like the output you provided.
The only option is to use for disk space df:
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/root 73216256 27988724 41485276 41% /
devtmpfs 8170164 0 8170164 0% /dev
tmpfs 8203680 544 8203136 1% /dev/shm
tmpfs 8203680 12004 8191676 1% /run
tmpfs 5120 4 5116 1% /run/lock
tmpfs 8203680 0 8203680 0% /sys/fs/cgroup
/dev/sdb1 482922 83939 374049 19% /boot
and for cpu you have many more options, e.g.
vmstat
procs -----------memory---------- ---swap-- -----io---- -system-- ------cpu-----
r b swpd free buff cache si so bi bo in cs us sy id wa st
0 0 0 11865304 149956 1474172 0 0 53 46 126 707 3 0 96 0 0
or top -b | head:
top - 21:48:43 up 54 min, 1 user, load average: 0.13, 0.17, 0.22
Tasks: 188 total, 1 running, 187 sleeping, 0 stopped, 0 zombie
%Cpu(s): 3.0 us, 0.4 sy, 0.1 ni, 96.5 id, 0.0 wa, 0.0 hi, 0.0 si, 0.0 st
KiB Mem : 16407364 total, 11848936 free, 2888844 used, 1669584 buff/cache
KiB Swap: 0 total, 0 free, 0 used. 13230972 avail Mem
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
1 root 20 0 40544 6440 3780 S 0.0 0.0 0:01.15 systemd
2 root 20 0 0 0 0 S 0.0 0.0 0:00.00 kthreadd
3 root 20 0 0 0 0 S 0.0 0.0 0:00.00 ksoftirqd/0

Answer 2

There is no command that gives you a load percentage of the cpu. It's actually impossible to get that with a system call (nor in linux neither in Windows). What you can get is the number of ticks currently executed (for each field, user, system, io,irq idle)..., then call it again a certain amount of time later and calculate it. That way is how work all the commands for reading the cpu percentage.
Here a script bash that gives you that: (just create a file named for example cpu.sh paste this code and execute to see the results)
_estado()
{
cat /proc/stat | grep "cpu " | sed -e 's/ */:/g' -e 's/^cpux//'
}
_ticksconcretos()
{
echo $1 | cut -d ':' -f $2
}
while true ; do
INICIAL=$(_estado)
sleep 1
FINAL=$(_estado)
UsuarioI=$(_ticksconcretos $INICIAL 1)
UsuarioF=$(_ticksconcretos $FINAL 1)
NiceI=$(_ticksconcretos $INICIAL 2)
NiceF=$(_ticksconcretos $FINAL 2)
SistemaI=$(_ticksconcretos $INICIAL 3)
SistemaF=$(_ticksconcretos $FINAL 3)
idleI=$(_ticksconcretos $INICIAL 4)
idleF=$(_ticksconcretos $FINAL 4)
IOI=$(_ticksconcretos $INICIAL 5)
IOF=$(_ticksconcretos $FINAL 5)
IRQI=$(_ticksconcretos $INICIAL 6)
IRQF=$(_ticksconcretos $FINAL 6)
SOFTIRQI=$(_ticksconcretos $INICIAL 7)
SOFTIRQF=$(_ticksconcretos $FINAL 7)
STEALI=$(_ticksconcretos $INICIAL 8)
STEALF=$(_ticksconcretos $FINAL 8)
InactivoF=$(( $idleF + $IOF ))
InactivoI=$(( $idleI + $IOI ))
ActivoI=$(( $UsuarioI + $NiceI + $SistemaI + $IRQI + $SOFTIRQI + $STEALI ))
ActivoF=$(( $UsuarioF + $NiceF + $SistemaF + $IRQF + $SOFTIRQF + $STEALF ))
TOTALI=$(( $ActivoI + $InactivoI ))
TOTALF=$(( $ActivoF + $InactivoF ))
PORC=$(( ( ( ( $TOTALF - $TOTALI ) - ( $InactivoF - $InactivoI ) ) * 100 / ( $TOTALF - $TOTALI ) ) ))
clear
echo "CPU: $PORC %"
done
For the free space You could use something like this:
df -h -x tmpfs -x devtmpfs | awk -F " " '{print $1 " " $4 " " $2}'
wich will give you this output:
Filesystem Free Size
/dev/sda1 16G 25G
/dev/sda5 46G 79G
/dev/sdb8 130G 423G
sda represents the first disk, sda1 the first partition, sda2, the second one etc. you can add (or change) $6 inside the print to get the mount points instead of the partitions, change the order or even more things.