Change User from bash script

Question

I have a user "chad"

I am logging into linux machine with user "server"

I am creating a script and try to add below command

 sudo su -s /bin/bash chad

so I can get into user chad and execute rest of my commands from this script How do I do that?

Below Is My script

   #!/bin/bash

   exec /bin/su -s /bin/bash chad - << 'EOF'

   echo "pwd"
   pwd

   cd /home/chad/py2.0/test/py_it/


   echo "git branch"
   git branch



   read -p "Are you sure about branch? (yes/no)" reply

   choice=$(echo $reply|sed 's/\(.*\)/\L\1/')

   if [ "$choice" = 'yes' ] 
   then
   echo "Welcome you selected yes, wait for 3 seconds to get output";
   sleep 3;
   echo "git pull for py2.0";
   "git pull origin integration/py2.0";

   elif [ "$choice" = 'no'  ]
   then

   echo "You selected 'no', hence exiting in 3 seconds";
   sleep 3
   exit 0
   else
   echo "invalid answer, type yes or no";
   fi
   EOF

Below is Output

   git branch
  * integration/py2.0
   master
  invalid answer, type yes or no

If this doesnt work, did you try to export user into your script? export $USER=chad or you can use setenv — Srini V
– Srini V, Commented Feb 10, 2016 at 10:32

Laser · Accepted Answer · 2016-02-11 11:21:05Z

3

You have to add the following line in your script:
exec sudo -u chad /bin/sh - << 'EOF'

All commands after this line will be under chad user

Check it with this:

id
exec sudo -u chad /bin/sh - << 'EOF'
id
id
id
EOF

edited Feb 11, 2016 at 11:21

answered Feb 10, 2016 at 10:31

Laser

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13 Comments

Jaydeep Chaudhari Over a year ago

not working .when i use exec sudo -u /bin/bash chad - << eof it changes the user but no other commands works in scrips

Laser Over a year ago

could you please give us more details

Laser Over a year ago

for example insert : id id id right after command

Jaydeep Chaudhari Over a year ago

Script = #!/bin/bash exec su -s /bin/bash chad - << eof echo "pwd" cd cd chad_py2.0/chad_cloud/ echo "git branch" git branch read -p "Are you sure about branch? " -n 1 -r echo # (optional) move to a new line if [[ $REPLY =~ ^[Yy]$ ]] then echo "git pull for py2.0"

Jaydeep Chaudhari Over a year ago

output = sudo ./test.sh ./test.sh: line 35: warning: here-document at line 3 delimited by end-of-file (wanted

eof') pwd git branch * integration/py2.0   master bash: line 14: cho: command not found bash: line 15: conditional binary operator expected bash: line 15: syntax error near

^[Yy]$' bash: line 15: `if [[ =~ ^[Yy]$ ]]'

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