Currently supported releases
- Forgotten Username
- restart the machine
- press “Shift” at the GRUB loader screen
- select “Rescue Mode” and press “Enter.”
- At the root prompt, type “cut –d: -f1 /etc/passwd” and then press “Enter.”
- Ubuntu displays a list of all usernames assigned to the system.
Easy Way to Resetting your root password
1 Reboot PC.
2 To start GRUB menu Hold Shift during boot.
3 Select advanced options for Ubuntu
4 Select the option with recovery mode
5 Select root and press enter
mount -n -o remount,rw /
7 Press Enter
9 Give new password
Can i change the root password after rooting my android device by simply typing «passwd»?
Android does not use /etc/passwd so it also does not have passwd
program.
how is the rooting process working ? i mean what is the «one click root» apps doing to my phone?
I’m not quire sure with the exact process myself, you probably want to ask to rooting developers. However, my guess is it just reverts the security check that originally prevent developer from setuid 0.
And im a developer, so how can i find hidden APIs (like iOS) for rooted app development ?
Since Android is open source, there is no truly hidden API in Android. However, there are some unpublicized or undocumented APIs, you can browse for this in Android’s source code. However, these APIs are not about root developments, they’re usually in-development APIs that are not ready yet or is too localized for specific purpose that is not useful for public developer (or perhaps Google just haven’t realized their usefulness yet). You are not restricted from using these APIs, but since these are not an officially supported APIs, they may disappear or break backward compatibilities in the future. If you need to use these APIs make sure your app breaks gracefully.
What is the default root password for raspbian jessie or debian 9?
I have Raspbian Jessie stretch iso «Raspberry Pi Desktop» or pixel Virtualbox and I need to install keys with root «su», what is the default password since raspberry nor pi aren’t working.
asked Apr 18, 2019 at 23:19
From the offical documentation:
answered Apr 19, 2019 at 19:58
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answered Apr 29, 2020 at 13:11
You are in emergency mode. After logging in, type «journalctl -xb» to view
system logs, «systemctl reboot» to reboot, «systemctl default» or ^D to
try again to boot into default mode.
Give root password for maintenance
(or press Control-D to continue)
answered Feb 5, 2020 at 22:22
Edit, did you google this at all? https://www.raspberrypi.org/forums/viewtopic.php?t=136199
answered Apr 18, 2019 at 23:22
In raspbian, you can reset the root password:
sudo passwd root
Then, the console write:
New password:
Write a password for root and then, the console write:
Retype the new password:
You must write the password you decided. If there is no errors you have this console message:
passwd: password updated successfully
Now the password is reset.
If you login into root with a GUI, press Ctrl+Alt+Del for disconnect beacause you don’t have taskbar.
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answered Jan 2, 2022 at 11:51
/var/log/mysql/error.log
/var/log/syslog
asked Jun 17, 2019 at 5:13
Restart MySQL in passwordless mode, reset the password, restart the MySQL service.
# 1 : Stop mysql service
/etc/init.d/mysql stop
# 2: Start to MySQL server w/o password:
mysqld_safe --skip-grant-tables &
# Step # 3: Connect to mysql server using mysql client:
mysql -u root
-- 4: Setup new MySQL root user password
use mysql;
update user set password=PASSWORD("NEW-ROOT-PASSWORD") where User='root';
flush privileges;
quit
# 5: Stop MySQL Server:
/etc/init.d/mysql stop
# 6: Start MySQL server and test it
/etc/init.d/mysql start
mysql -u root -p
answered Jun 17, 2019 at 5:23
Find your socket file by running.
sudo find / -type s
create a link to this file in tmp directory.
sudo ln -s /var/run/mysqld/mysqld.sock /tmp/mysql.sock
answered Jun 17, 2019 at 12:54
$ sudo systemctl stop mysql.service
$ sudo mkdir /var/run/mysqld
$ sudo chown mysql.mysql /var/run/mysqld
$ sudo mysqld_safe --skip-grant-tables --socket=/var/run/mysqld/mysqld.sock &
$ mysql -u root
> *proceed with mysql password change*
> ^D
$ mysqladmin shutdown
$ sudo systemctl start mysql.service
This worked for me. Now you should be able to go about your mysql business as usual, as I was.
UPDATE- if you’ve just installed MySQL 8.0+, there’s now a straightforward way to set the root password: Securing the Initial MySQL Account
answered Apr 20 at 7:43
Cannot login to MySQL database after fresh install with root ID and empty/no password like other older MySQL versions do
asked Nov 30, 2015 at 3:57
There’s so many answers out there saying to reinstall mysql or use some combo of
mysqld_safe --skip-grant-tables
and / or
UPDATE mysql.user SET Password=PASSWORD('password')
Here’s what worked for me, on Ubuntu 18.04, from the top
$ sudo apt install mysql-server
$ sudo cat /etc/mysql/debian.cnf
Note the lines which read:
user = debian-sys-maint
password = blahblahblah
$ mysql -u debian-sys-maint -p
Enter password: // type 'blahblahblah', ie. password from debian.cnf
mysql> USE mysql
mysql> SELECT User, Host, plugin FROM mysql.user;
+------------------+-----------+-----------------------+
| User | Host | plugin |
+------------------+-----------+-----------------------+
| root | localhost | auth_socket |
| mysql.session | localhost | mysql_native_password |
| mysql.sys | localhost | mysql_native_password |
| debian-sys-maint | localhost | mysql_native_password |
+------------------+-----------+-----------------------+
4 rows in set (0.00 sec)
mysql> UPDATE user SET plugin='mysql_native_password' WHERE User='root';
mysql> COMMIT; // When you don't have auto-commit switched on
mysql> ALTER USER 'root'@'localhost' IDENTIFIED BY 'new_password';
// For MySQL 5.7+
UPDATE mysql.user SET authentication_string=PASSWORD('new_password') where user='root';
mysql> FLUSH PRIVILEGES;
mysql> COMMIT; // When you don't have auto-commit switched on
mysql> EXIT
$ sudo service mysql restart
$ mysql -u root -p
Enter password: // Yay! 'new_password' now works!
answered May 12, 2018 at 10:35
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After you installed MySQL-community-server 5.7 from fresh on linux, you will need to find the temporary password from /var/log/mysqld.log to login as root.
grep 'temporary password' /var/log/mysqld.log
- Run
mysql_secure_installation
to change new password
answered Nov 30, 2015 at 3:57
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MySQL 5.7 changed the secure model: now MySQL root login requires a sudo
1. Connect to mysql
sudo mysql --user=root mysql
CREATE USER 'phpmyadmin'@'localhost' IDENTIFIED BY 'some_pass';
GRANT ALL PRIVILEGES ON *.* TO 'phpmyadmin'@'localhost' WITH GRANT OPTION;
FLUSH PRIVILEGES;
answered Oct 10, 2018 at 14:20
Sachin Vairagi
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MySQL server 5.7 was already installed by default on my new Linux Mint 19.
But, what’s the MySQL root
password? It turns out that:
The default installation uses auth_socket
for authentication, in lieu of passwords!
sudo mysql --user=root
mysql> CREATE USER 'me'@'localhost' IDENTIFIED BY 'my_new_password';
mysql> GRANT ALL PRIVILEGES ON *.* TO 'me'@'localhost' WITH GRANT OPTION;
mysql> FLUSH PRIVILEGES;
Comparing «me» with «root»:
mysql> SELECT user, plugin, HEX(authentication_string) FROM mysql.user WHERE user = 'me' or user = 'root';
+------+-----------------------+----------------------------------------------------------------------------+
| user | plugin | HEX(authentication_string) |
+------+-----------------------+----------------------------------------------------------------------------+
| root | auth_socket | |
| me | mysql_native_password | 2A393846353030304545453239394634323734333139354241344642413245373537313... |
+------+-----------------------+----------------------------------------------------------------------------+
ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY 'SOME_NEW_ROOT_PASSWORD';
A good explanation.
More details from the MySQL manual.
answered Sep 15, 2019 at 20:40
# first part opens mysql log
# second part greps lines with temporary password
# third part picks last line (most recent one)
# last part removes all the line except the password
# the result goes into password variable
password=$(cat /var/log/mysqld.log | grep "A temporary password is generated for" | tail -1 | sed -n 's/.*root@localhost: //p')
# setting new password, you can use $1 and run this script as a file and pass the argument through the script
newPassword="wh@teverYouLikE"
# resetting temporary password
mysql -uroot -p$password -Bse "ALTER USER 'root'@'localhost' IDENTIFIED BY '$newPassword';"
answered Jun 16, 2017 at 3:33
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MySQL 5.7 or newer generates a default temporary password after fresh install.
grep 'temporary password' /var/log/mysqld.log
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answered Oct 31, 2018 at 10:40
sudo mysql -u root
create user 'user'@'localhost' identified by 'user1234';
grant all on your_database.* to 'user'@'localhost';
select host, user from mysql.user;
Then try to access:
mysql -u user -p
answered Oct 6, 2018 at 0:54
Pablo Pazos
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None of these answers worked for me on Ubuntu Server 18.04.1 and MySQL 5.7.23. I spent a bunch of time trying and failing at setting the password and auth plugin manually, finding the password in logs (it’s not there), etc.
The solution is actually super easy:
sudo mysql_secure_installation
It’s really important to do this with sudo
. If you try without elevation, you’ll be asked for the root password, which you obviously don’t have.
answered Sep 28, 2018 at 18:03
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sudo -i
mkdir -p /var/run/mysqld
chown mysql:mysql /var/run/mysqld
/etc/init.d/mysql stop
mysqld_safe --skip-grant-tables &
mysql -uroot
use mysql;
update user set authentication_string=password('YOURPASSWORD') where user='root';
update user set plugin="mysql_native_password" where User='root';
flush privileges;
quit;
sudo /etc/init.d/mysql stop
sudo /etc/init.d/mysql start
Sometimes, even after typed in the terminal
mkdir -p /var/run/mysqld
chown mysql:mysql /var/run/mysqld
/etc/init.d/mysql stop
mysqld_safe --skip-grant-tables &
I got the error that the mysqld don’t exists. So, quit, and type the same commands again.
And the final command
sudo /etc/init.d/mysql start
Sometimes doesn’t work. Only after restart the computer.
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answered Apr 30, 2019 at 1:52
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I just installed Linux Mint 19 (based on Ubuntu 18.04) on my machine. I installed MySQL 5.7 from the repo (sudo apt install mysql-server) and surprisingly during installation, the setup didn’t prompt to enter root password. As a result I wasn’t able to login into MySQL. I googled here and there and tried various answers I found on the net, including the accepted answer above. I uninstalled (purging all dpkgs with mysql in its name) and reinstalled again from the default Linux Mint repositories. NONE works.
After hours of unproductive works, I decided to reinstall MySQL from the official page. I opened MySQL download page (https://dev.mysql.com/downloads/repo/apt) for apt repo and clicked Download button at the bottom right.
Next, run it with dpkg:
sudo dpkg -i mysql-apt-config_0.8.10-1_all.deb
At the installation setup, choose the MySQL version that you’d like to install. The default option is 8.0 but I changed it to 5.7. Click OK to quit. After this, you have a new MySQL repo in your Software Sources.
Update your repo:
sudo apt update
Finally, install MySQL:
sudo apt install mysql-server
And now I was prompted to provide root password! Hope it helps for others with this same experience.
answered Jul 1, 2018 at 9:11
As of Ubuntu 20.04 with MySql 8.0 : you can set the password that way:
login to mysql with
sudo mysql -u root
change the password:
USE mysql; UPDATE user set authentication_string=NULL where User='root'; FLUSH privileges; ALTER USER 'root'@'localhost' IDENTIFIED WITH caching_sha2_password BY 'My-N7w_And.5ecure-P@s5w0rd'; FLUSH privileges; QUIT
answered Jul 28, 2020 at 15:43
Ohad Cohen
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To do it in non interactive mode (from a script):
systemctl start mysqld
MYSQL_ROOT_TMP_PSW=$(grep 'temporary password' $logpath/mysqld.log |sed "s|.*: ||")
## POPULATE SCHEMAS WITH ROOT USER
/usr/bin/mysql --connect-expired-password -u root -p${MYSQL_ROOT_TMP_PSW} < "$mysql_init_script"
Here’s the head of the init script
SET GLOBAL validate_password_policy=LOW;
FLUSH privileges;
SET PASSWORD = PASSWORD('MYSQL_ROOT_PSW');
FLUSH privileges;
GRANT ALL PRIVILEGES ON *.* TO 'root'@'%';
FLUSH privileges;
...
Then restart the service systemctl restart mysqld
answered Dec 28, 2020 at 18:18
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In my case the data directory was automatically initialized with the --initialize-insecure
option. So /var/log/mysql/error.log
does not contain a temporary password but:
What worked was:
shell> mysql -u root --skip-password
mysql> ALTER USER 'root'@'localhost' IDENTIFIED BY 'new_password';
Details: MySQL 5.7 Reference Manual > 2.10.4 Securing the Initial MySQL Account
answered Sep 26, 2018 at 11:10
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I to was experiencing the same problem and the only thing I was able to do to make it work was to go this route:
drop user admin@localhost;
flush privileges;
create user admin@localhost identified by 'admins_password'
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answered Sep 6, 2018 at 20:08
Donald L WilsonDonald L Wilson
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