By default on Debian based systems, Docker needs the sudo command to run. We can add a normal user to the Docker group so we don’t have to.
sudo usermod -aG docker username
Change out the username to your Ubuntu username.
The -a option means append the group to the username. It does not remove the user from current groups.
the -G option means add the specified group.
Log into mysql
mysql -u root -p
List users
select User,Host from mysql.user;
Should return something like the following
MariaDB [mysql]> select User,Host from user;
+----------+-----------------------+
| User | Host |
+----------+-----------------------+
| root | 127.0.0.1 |
| librenms | localhost |
| | localhost.localdomain |
+----------+-----------------------+
3 rows in set (0.00 sec)
MariaDB [mysql]>
Delete anonymous user
Note that there are two single quotes ‘ before the @ sign, not a double quote “
drop user ''@'localhost.localdomain';
This script adds a new SFTP user with only sftp access. Refer to this post on setting up a SFTP server.
Download script
wget www.incredigeek.com/home/downloads/scripts/sftpUserAdd.sh
Make executable
chmod +x sftpUserAdd.sh
Run with the new user you want to create.
./sftpUserAdd.sh sftpUsername
You may need to edit the script and modify the location parameters.
#!/bin/bash
# Automatically setup and add SFTP user
# Script creates new user and setups permissions
newUser=$1
sftpDir="/sftp/"
if grep -q ${newUser} /etc/passwd ;then
echo ${newUser} Already exsists. Aborting!
exit 1
else
mkdir -p ${sftpDir}/${newUser}/files
useradd -g sftpusers -d ${sftpDir}/${newUser}/files -s /sbin/nologin ${newUser}
passwd ${newUser}
chown ${newUser}:sftpusers /sftp/CareMark/files
fi
The following commands are helpful for seeing if a user is currently logged in, or when the last time a user was on.
Who
The “who” command give information about users that are currently logged in
[steve@localhost ~]$ who
root pts/0 2018-12-14 15:05 (192.168.1.23)
steve pts/2 2018-12-14 12:09 (192.168.1.25)
[steve@localhost ~]$
Last
The last command shows a list of the last logged in users
[steve@localhost ~]$ last
steve pts/2 192.168.1.25 Fri Dec 14 15:05 still logged in
root pts/1 192.168.1.23 Fri Dec 14 12:09 - 12:09 (00:00)
steve tty1 Thu Nov 8 10:02 - 10:15 (00:13)
reboot system boot 4.7.0.x Thu Nov 8 09:01 - 10:12 (01:01)
wtmp begins Tue Oct 11 09:01:57 2018
[steve@localhost ~]$