Closed. This question does not meet Stack Overflow guidelines. It is not currently accepting answers.
This question does not appear to be about a specific programming problem, a software algorithm, or software tools primarily used by programmers. If you believe the question would be on-topic on another Stack Exchange site, you can leave a comment to explain where the question may be able to be answered.
Closed 8 years ago.
Improve this question
I´ve written a simple bash Script to reboot and update my Ubuntu 12.04 server automatically via crontab.
Here is my script:
#!/bin/bash
sudo reboot
/usr/bin/apt-get -qy update > /dev/null
/usr/bin/apt-get -qy dist-upgrade > /dev/null
exit 0
The update section doesn´t work. The server only restarts.
Can someone help me?
The script calls reboot first which halts execution so the update, upgrade is never called. If you want to reboot put it at the end of the script.
Piping the outputs to /dev/null is also a bad idea in case something goes wrong.
Better use something like this:
unattended-upgrades
It can notify you of the updates and problems and can also be configured to only perform security updates automatically
You can use cron's special word #reboot to run script after reboot. Edit your crontab with crontab -e to add:
#reboot apt-get --quiet --yes update > /dev/null && apt-get --quiet --yes dist-upgrade > /dev/null
# or
#reboot update-after-reboot.bash
Related
Closed. This question is not about programming or software development. It is not currently accepting answers.
This question does not appear to be about a specific programming problem, a software algorithm, or software tools primarily used by programmers. If you believe the question would be on-topic on another Stack Exchange site, you can leave a comment to explain where the question may be able to be answered.
Closed last month.
Improve this question
I'm running the script below on a gcp debian instance. When shutting down my computer, ssh disconnects, and the script stops. Below is my script:
wget -P/root -N --no-check-certificate "https://raw.githubusercontent.com/reeceyng/v2ray-agent/master/shell/install_en.sh" && mv /root/install_en.sh /root/install.sh && chmod 700 /root/install.sh &&/root/install.sh
I have tried Tmux and screen to prevent this based on other posts suggestions. None of them were helpful. All processes stop after some time.
Use nohup to detach your process (here, wget) from your shell. For example:
nohup wget -P/root -N --no-check-certificate "https://raw.githubusercontent.com/reeceyng/v2ray-agent/master/shell/install_en.sh" && mv /root/install_en.sh /root/install.sh && chmod 700 /root/install.sh &&/root/install.sh &
should do the trick.
Closed. This question does not meet Stack Overflow guidelines. It is not currently accepting answers.
This question does not appear to be about a specific programming problem, a software algorithm, or software tools primarily used by programmers. If you believe the question would be on-topic on another Stack Exchange site, you can leave a comment to explain where the question may be able to be answered.
Closed 2 years ago.
Improve this question
I have a script which executes manually:
#!/bin/bash
mount -t cifs //192.168.138.18/Shared_Drive /mnt/share -o username=user,password=guest
But sudo crontab -e doesn't execute it. I tried:
#reboot /home/user/startup.sh
#reboot sh /home/user/startup.sh
#reboot bash -l /home/user/startup.sh
#reboot /bin/bash /home/user/startup.sh
Nothing works. Permits are:
-rwxr-x--x 1 user user
crontab -e doesn't execute scheduled command, it opens your crontab rules file in an editor
The command will then be executed by cron itself on the specified schedule. (If the rule is written correctly. If you want help checking that then include the cron rule.)
Also note that the crontab command man page says
Note that su(8) can confuse crontab and that if you are running inside of su(8) you should always use the -u option for safety's sake
So you should run sudo crontab -u root -e
Closed. This question does not meet Stack Overflow guidelines. It is not currently accepting answers.
This question does not appear to be about a specific programming problem, a software algorithm, or software tools primarily used by programmers. If you believe the question would be on-topic on another Stack Exchange site, you can leave a comment to explain where the question may be able to be answered.
Closed 6 years ago.
Improve this question
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
Closed. This question does not meet Stack Overflow guidelines. It is not currently accepting answers.
This question does not appear to be about a specific programming problem, a software algorithm, or software tools primarily used by programmers. If you believe the question would be on-topic on another Stack Exchange site, you can leave a comment to explain where the question may be able to be answered.
Closed 6 years ago.
Improve this question
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
Closed. This question does not meet Stack Overflow guidelines. It is not currently accepting answers.
This question does not appear to be about a specific programming problem, a software algorithm, or software tools primarily used by programmers. If you believe the question would be on-topic on another Stack Exchange site, you can leave a comment to explain where the question may be able to be answered.
Closed 8 years ago.
Improve this question
I'm planning on making a Bash script that sets up an SSH server. The script is only meant to work on a computer running OS X. With the research I have conducted it seems like you have to use the GUI to enable SSH. Is their a way to enable SSH through Terminal and then create a script that does so?
You can enable it from the command line (or a shell script) with:
sudo launchctl load -w /System/Library/LaunchDaemons/ssh.plist
You might also want to regulate access to the ssh service with the com.apple.access_ssh group:
sudo dseditgroup -o edit -a usernametoallow -t user com.apple.access_ssh
sudo dseditgroup -o edit -a otherusernametoallow -t user com.apple.access_ssh
sudo dseditgroup -o edit -a groupnametoallow -t group com.apple.access_ssh
...after which only usernametoallow, otherusernametoallow, and members of groupnametoallow will be able to ssh into the Mac.