Linux

Add new user

adduser davidhsaiou
passwd davidhsaiou
usermod -aG wheel davidhsaiou

touch ~/.ssh/authorized_keys
chmod 700 ~/.ssh
chmod 600 ~/.ssh/authorized_keys

check for allow key settings

PubkeyAuthentication yes AuthorizedKeysFile .ssh/authorized_keys

vim /etc/ssh/sshd_config
sudo systemctl restart sshd

mount

sudo mount -t nfs 192.168.118.53:/home/nfsdata/release-images /mnt/nfs_share

force umount

sudo umount -l /mnt/

ldd *.so for finding dependency

test disk iops

install sysstat

sudo apt install sysstat

whatch current stat

iostat -dx 1

install and test iops

sudo apt install fio
 fio --name=test --rw=randread --size=1G --bs=4k --numjobs=4 --runtime=60 --group_reporting