To rename the machine account in samba, add the following line in you smb.conf file

rename user script = /usr/sbin/smbldap-usermod -r '%unew' '%uold'

Check samba config and status

testparm
smbstatus

Mount samba share in linux using password file
Install cifs-utils package

sudo apt-get install cifs-utils

Create password file and set its permission

nano ~/.smbcred

Paste the following in the file, make sure to change user and pass, save the file and exit once done

username=user
password=pass

Secure the file

chmod 600 ~/.smbcred

Edit the fstab file

nano /etc/fstab

And past the following in it, save and exit once done

//smbsrv/smbshare /mnt/smbshare cifs credentials=/home/username/.smbcred,iocharset=utf8,sec=ntlm 0 0

Try mounting the share

mount -a

Restart remote windows machine, ajust the values of ipaddress, username and password

net rpc shutdown -r -C "This machine is going for restart in 60 seconds" -I ipaddress -U username%password

See samba connection to samba shares

smbstatus -S

See who is connected to samba

smbstatus -b

Samba4

add users

samba-tool add user rkhan Test123 --userou=ou=people

add group

samba-tool group add radius --groupou=ou=groups

add members to group

samba-tool group addmembers radius rkhan

list members of radius group

samba-tool group listmembers radius

remove user

samba-tool user delete rkhan

remove group

samba-tool group delete radius

remove members from group

samba-tool group removemembers radius rkhan

Edit user, adjust the samaccountname

ldbedit -e nano -H /var/lib/samba/private/sam.ldb "(samaccountname=rkhan)"

# stops the syslog being spammed by the lack of a CUPS server.

printing = CUPS
printcap name = /dev/null