ubuntu1004@ubuntu1004:~$ df -h
Filesystem Size Used Avail Use% Mounted on
/dev/sda1 16G 3.5G 11G 25% /
none 496M 260K 496M 1% /dev
none 500M 256K 500M 1% /dev/shm
none 500M 84K 500M 1% /var/run
none 500M 0 500M 0% /var/lock
none 500M 0 500M 0% /lib/init/rw
ubuntu1004@ubuntu1004:~$ df -h|grep sda1
/dev/sda1 16G 3.5G 11G 25% /
ubuntu1004@ubuntu1004:~$ df -h|grep sda1|awk '{print $5}'
25%
ubuntu1004@ubuntu1004:~$ df -h|awk '/sda1/'
/dev/sda1 16G 3.5G 11G 25% /
ubuntu1004@ubuntu1004:~$ df -h|awk '/sda1/ {print $5}'
25%
ubuntu1004@ubuntu1004:~$ df -h|awk '/sda1/ {print $4}'
11G
ubuntu1004@ubuntu1004:~$ df -h|awk '/sda1/ {print $4" "$5}'
11G 25%
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