[root]# which bash
/bin/bash
Create symbolic link
ln -s /bin/bash /opt/hipbash
useradd hip -s /opt/hipbash
passwd hip
mkdir /home/hip/bin
VD: create command ping and deny any order command
ln -s /bin/ping /home/hip/bin/ping
chown root. /home/hip/.bash_profile
chmod 755 /home/hip/.bash_profile
vi /home/hip/.bash_profile
search and replace PATH
PATH=$HOME/bin
