If you get tired of typing your password for sudo, but you don't want (or don't have permissions) to put NOPASSWD in your sudoers file, you can use the following procedure to update the sudo password timestamp and avoid typing your password.
Step 1) Create $HOME/bin/sudo-hack.sh:
#!/bin/bash while [ true ]; do sudo -u root /bin/true > /dev/null 2> /dev/null sleep 60 done
Step 2) Do an initial run of sudo to set its password timestamp:
$ sudo -u root /bin/true Password: *******
Step 3) Start $HOME/bin/sudo-hack.sh in the background:
$ HOME/bin/sudo-hack.sh &
Now you can use sudo without getting a password prompt, regardless of how long it's been since the last time you ran sudo.
Note: there are most certainly security implications related to using this procedure; of course, that's also true of using NOPASSWD in the sudoers file.
The following methods can be used for resetting the root password if the root password is unknown.
If you use GRUB for booting, select the system to be booted, and add 1 to the end of the kernel boot command. If you're not presented with an edit “box” to add boot parameters, try using GRUB's edit command (the letter e). The 1 tells the kernel to boot to single-user mode.
The system now should boot to a root prompt. At this point, simply use the passwd command to change the root password.
Another option is to boot a rescue CD or an installation CD that lets you get to the command line. Once you're at a command prompt, mount the system's root directory if it's not already mounted:
$ mkdir /mnt/system $ mount /dev/sda1 /mnt/system
Now, do a chroot and reset the password:
$ chroot /mnt/system $ passwd
Webinar: 8 Signs You’re Beyond Cron
On Demand NOW
Join Linux Journal and Pat Cameron, Director of Automation Technology at HelpSystems, as they discuss the eight primary advantages of moving beyond cron job scheduling. In this webinar, you’ll learn about integrating cron with an enterprise scheduler.View Now!
|Dr Hjkl on the Command Line||May 21, 2015|
|Initializing and Managing Services in Linux: Past, Present and Future||May 20, 2015|
|Goodbye, Pi. Hello, C.H.I.P.||May 18, 2015|
|Enter to Win Archive DVD + Free Backup Solution||May 18, 2015|
|Using Hiera with Puppet||May 14, 2015|
|Urgent Kernel Patch for Ubuntu||May 12, 2015|
- Initializing and Managing Services in Linux: Past, Present and Future
- Dr Hjkl on the Command Line
- Goodbye, Pi. Hello, C.H.I.P.
- Using Hiera with Puppet
- Gartner Dubs DivvyCloud Cool Cloud Management Vendor
- Mumblehard--Let's End Its Five-Year Reign
- Enter to Win Archive DVD + Free Backup Solution
- Infinite BusyBox with systemd
- It's Easier to Ask Forgiveness...
- A More Stable Future for Ubuntu