Outputing only number in df command

Question

I have a disk mounted on /dev/xxx. If I use only df, it returns this:

Filesystem     1K-blocks     Used Available Use% Mounted on
/dev/xxx       125829120 43861888  81967232  35% /
devtmpfs         4194304        0   4194304   0% /dev
...

I need to get only:

a) number of 1K-blocks

b) used space

How to do that?

See https://unix.stackexchange.com/a/369589/117549 and https://unix.stackexchange.com/a/424565/117549 for some examples — Jeff Schaller, Apr 18 '20 at 21:27
You don't have a disk mounted on /dev/xxx. You have /dev/xxx mounted on /. — Kusalananda, Apr 18 '20 at 22:45

score 2 · Answer 1 · answered Apr 18 '20 at 18:11

2

df /dev/sda1 --output=source,size,used

...gives a terse summary.

answered Apr 18 '20 at 18:11

JRFerguson

14,740

GMaster · Accepted Answer · 2020-04-19T01:33:32.650

1

Here you go

df /dev/xxx | awk 'END { print $2, $3 }'

edited Apr 19 '20 at 01:33

answered Apr 18 '20 at 18:02

GMaster

6,322

Stalin Vignesh Kumar · Answer 3 · 2020-04-18T18:14:38.443

0

Using awk , if you want to do some process inside the block .

For only number of K-blocks and used space :

df | awk 'BEGIN { getline } { print $2,$3 }'

If you want With Filesystem name :

df | awk 'BEGIN { getline }  { print $1,$2,$3 }'

For only the disk /dev/xxx

df /dev/xxx | awk 'BEGIN { getline }  { print $2,$3 }'

edited Apr 18 '20 at 18:14

answered Apr 18 '20 at 18:02

Stalin Vignesh Kumar

1,755
6
15

Outputing only number in df command

3 Answers3