how to execute multiple commands after sudo command

Question

I need to run a batch to login to server, get in sudo su - username and run specific commands.

I tried below code:

putty username@servername -pw password -m myshell.sh

myshell.sh:

#!/bin/sh
sudo su - username
cd to particular folder
then tail a file

i am getting in sudo, but after that the script stucks until i logout.

Answer 1

You can use sh -c and then use semicolons between commands, I'd consider the solution suggested in the comments though, just have whole script run as sudo.

sudo sh -c "cd /tmp;pwd;cd /dev;pwd""

Answer 2

updated my shell file with below command and it worked:

#!/bin/sh
sudo su - username << block
cd /; 
tail filename;
block

all the commands are to be written in block and separated by ";"