su - username command doesn't act as expected [closed] - linux

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Closed 6 months ago.
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I am trying to switch to another user using su command, but it doesn't work as expected.
What I am expecting:
[root#ubuntu ~]# su testuser
[testuser#ubuntu root]#
What actually happens:
[root#ubuntu ~]# su testuser
bash-4.2$
whoami command:
bash-4.2$ whoami
testuser

The testuser might not have the same bash configuration. So the prompt might look different. Check the current user with whoami after you switched the user.

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No remote commands executed when ssh runs as sudo [closed]

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Closed 2 years ago.
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The following command gives the expected result (file is created):
sshpass -p pas ssh root#host 'touch foo'
But the following one does nothing on the remote host:
sudo sshpass -p pas ssh root#host 'touch foo'
The only difference here is just sudo mode.
What is the reason here? And how this can be solved?
The problem is more visible when running ssh -v.
With sudo communication interrupts after detecting the server host key.
To solve the problem ssh needs to run with the following argument -o "StrictHostKeyChecking no".

How do I run `forever` from Crontab? [closed]

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Closed 6 years ago.
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I am trying to schedule node server restart on OS reboot (Ubuntu 16.04 LTS). I wrote:
crontab -u username -e
then I added following line:
#reboot /usr/local/bin/forever start -c /usr/bin/node /home/username/node/bin/www
I get the success message after saving or updating this file. There seems to be no effect on server reboot.
I'd wrap that into a bash script in the user's home directory's bin.
/home/username/bin/start_my_node_app.sh
Then in your crontab...
#reboot /home/username/bin/start_my_node_app.sh >/dev/null 2>&1
Though according to this article, #reboot may not work for non-root users.
https://unix.stackexchange.com/questions/109804/crontabs-reboot-only-works-for-root

Issue with changing login shell [closed]

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Closed 6 years ago.
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I want to change the default login shell on my Ubuntu.
To change the shell I ran the following:
$ chsh -s /usr/bin/zsh
After that I restart my terminal but my default shell is still bash.
$ echo $SHELL
/bin/bash
These are shells installed on my machine:
$ cat /etc/shells
# /etc/shells: valid login shells
/bin/sh
/bin/dash
/bin/bash
/bin/rbash
/bin/zsh
/usr/bin/zsh
Record for my user in /etc/passwd is also changed like expected:
$ cat /etc/passwd|grep myuser
myuser:x:1000:1000:myuser,,,:/home/myuser:/usr/bin/zsh
I successfully changed my login shell the same way on my mac but I seem to be having some issue on Ubuntu. Am I missing something here?
You need to logout and log back into Ubuntu so that your GUI based X terminal shells pick up the new shell value.
Note: Ctrl+Alt+F[1-6] represent 6 virtual shells while GUI login is on Ctrl+Alt+F7

Loging with SSH with a different user, shows no current path [closed]

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Closed 9 years ago.
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I am trying to get a server up and running, there is no problem when I am using my root user, however when I created a new user and I log in with him instead of getting
user#internet:/$
I am only geting $ and I can't see the folder in which I am.
The server is running ubuntu if that helps.
Your new user is probably using a different shell. You can check by typing $0 at the prompt in each.
It sounds like root is using bash and your new user is using sh, but do the above to check.
If you want to modify the login shell for your new user, use usermod with the -s flag:
usermod user -s /bin/bash
The above would set the default shell to bash.
It's because your user runs sh as default shell.
Run as root:
chsh -s /bin/bash your_user
And login again.

groups: command not found [closed]

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Closed 8 years ago.
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I'm getting the following error after logging in:
Last login: Thu May 30 15:25:49 2013 from
-bash: groups: command not found
xxx#Dogbert:~$ /usr/bin/groups
-bash: /usr/bin/groups: Permission denied
xxx#Dogbert:~# su -
root#Dogbert:~# ls -la /usr/bin/groups
-rwxr-xr-x 1 root root 26180 Mai 28 22:21 /usr/bin/groups
Any ideas?
1 easy possibility (before further infos from you):
At the point where your login script(s) uses "groups" (without saying "/usr/bin/groups"), the current $PATH doesn't yet contain /usr/bin ?

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