I'm newbie to linux and I'm trying to make an initial configuration script for basic users passwords, SSH rules and system config of Hostname & timezone as below, But I'm getting below errors, I couldn't figure it out. Anyone could help me plz Thanks, Answer I've found this out after long search. The problem is, executing the script with root

Ubuntu initial configuration script errors

I’m newbie to linux and I’m trying to make an initial configuration script for basic users passwords, SSH rules and system config of Hostname & timezone as below,

 1  #!/bin/bash
 2  # Login as Root
 3  sudo su -
 4  # Set Root password
 5  echo -e "dumppasswordndumppassword" | passwd root
 6  # Set default user ubuntu password
 7  echo -e "dumppasswordsndumppassword" | passwd ubuntu
 8  # SSH configuration
 9  # Permit SSH password Authentication
10  # Make a copy of sshd_config file with suffix in _backup_YYYY-MM-DD format
11  # Comment out PasswordAuthentication no
12  sudo sed -i_backup_`date +%F` -e '/^PasswordAuthentication no/ s/^#*/#/' /etc/ssh/sshd_config
13  # Add PasswordAuthentication yes after the commented line #PasswordAuthentication no
14  sudo sed -i '/^#PasswordAuthentication no/a PasswordAuthentication yes' /etc/ssh/sshd_config
15  # Permit SSH Root login
16  # Comment out PermitRootLogin prohibit-password
17  sudo sed -i -e '/^PermitRootLogin prohibit-password/ s/^#*/#/' /etc/ssh/sshd_config
18  # Add PermitRootLogin yes after the commented line #PermitRootLogin prohibit-password
19  sudo sed -i '/^#PermitRootLogin prohibit-password/a PermitRootLogin yes' /etc/ssh/sshd_config
20  # Restart SSh service
21  sudo service ssh restart
22  # Set timezone
23  sudo timedatectl set-timezone Africa/Cairo
24  # Set Hostname
25  # Set the current hostname variable
26  CUR_HOSTNAME=$(cat /etc/hostname)
27  # Set the desired new hostname
28  NEW_HOSTNAME="DufDuf"
29  # Make changes
30  sudo sed -i 's/^"$CUR_HOSTNAME"/"$NEW_HOSTNAME"/' /etc/hostname
31  sudo sed -i 's/^"$CUR_HOSTNAME"/"$NEW_HOSTNAME"/' /etc/hosts
32  # Update Repositories
33  sudo apt-get update
34  sudo apt update

But I’m getting below errors, I couldn’t figure it out.

'u: invalid option -- '
Usage: su [options] [LOGIN]

Options:
  -c, --command COMMAND         pass COMMAND to the invoked shell
  -h, --help                    display this help message and exit
  -, -l, --login                make the shell a login shell
  -m, -p,
  --preserve-environment        do not reset environment variables, and
                                keep the same shell
  -s, --shell SHELL             use SHELL instead of the default in passwd

' does not existot
' does not existuntu
: No such file or directoryhd_config
: No such file or directoryhd_config
: No such file or directoryhd_config
: No such file or directoryhd_config
 * Usage: /etc/init.d/ssh {start|stop|reload|force-reload|restart|try-restart|status}
Failed to set time zone: Invalid time zone 'Africa/Cairo
'
: No such file or directoryme
: No such file or directory
E: Invalid operation update
E: Invalid operation update

Anyone could help me plz

Thanks,

Answer

I’ve found this out after long search. The problem is, executing the script with root won’t work with

sudo su -

Instead, below code force script to run in a privileged mode

# Force script to run as Root
if [ $EUID != 0 ];
then
    sudo bash "$0" "$@";
    exit "$?";
fi

# For test, run whoami, expected result is root.
echo `whoami`

Advertisement

Answer