Ubuntu – Run a shutdown script

scriptsshutdown

I'm using Ubuntu 16.0.4
I want to run a script at shutdown
I've created a file etc/init.d/rabbitstop as below:

#!/bin/bash
cp -b /home/admin1/hello /home/admin1/pritesh/hi
exit 0

And I ran

sudo chmod +x /etc/rc6.d/rabbitstop

also ran this command:

sudo ln -s /etc/init.d/rabbitstop /etc/rc0.d/K01rabbitstop

then shutdown PC and started again, but I'm not getting the file named hi at this location:

/home/admin1/pritesh/

kindly suggest a solution to me

Best Answer

Make sure this directory exist : /home/admin1/pritesh you are using ubuntu 16.04 with systemd so create a systemd unit file in /etc/systemd/service/myunit.service

[Unit]
Description=my shutdown script
DefaultDependencies=no
Before=shutdown.target reboot.target halt.target

[Service]
Type=oneshot
ExecStart=/path/to/rabbitstop

[Install]
WantedBy=halt.target reboot.target shutdown.target

then run

systemctl daemon-reload
systemctl enable myunit

shutdown , halt or reboot to see the result .

Related Solutions

Ubuntu – Make executable bash script run with sudo privileges

Read man sudoers - it will let you grant passwordless access to a single command. Read man visudo, too.

From the man page:

  PASSWD and NOPASSWD

   By default, sudo requires that a user authenticate him or herself before running a
   command.  This behavior can be modified via the NOPASSWD tag.  Like a Runas_Spec, the
   NOPASSWD tag sets a default for the commands that follow it in the Cmnd_Spec_List.
   Conversely, the PASSWD tag can be used to reverse things.  For example:

   ray     rushmore = NOPASSWD: /bin/kill, /bin/ls, /usr/bin/lprm

   would allow the user ray to run /bin/kill, /bin/ls, and /usr/bin/lprm as root on the
   machine rushmore without authenticating himself.  If we only want ray to be able to run
   /bin/kill without a password the entry would be:

   ray     rushmore = NOPASSWD: /bin/kill, PASSWD: /bin/ls, /usr/bin/lprm

   Note, however, that the PASSWD tag has no effect on users who are in the group specified
   by the exempt_group option.

Also, I'll note that "making an existing bash script run as root" is the beginning of many very sad security tales.

Rather than making the script run as root, allow your user passwordless access to the ( full path of ) the 2 commands in your script.

Best Answer

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Ubuntu – Make executable bash script run with sudo privileges

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