I would like a brief explanation of the following command line:
grep -i 'abc' content 2>/dev/null
Is it possible to remove a particular host key from SSH's known_hosts file?
I usually end up deleting the entire known_hosts file, which I have no problems with doing, but just out of curiosity, is it possible to remove just a single entry?
I opened the known_hosts file, but I am struggling to understand its contents.
Below is the message I faced, which led me to ask this question:
Add correct host key in /home/wissen16/.ssh/known_hosts to get rid of this message.
Offending key in /home/wissen16/.ssh/known_hosts:1
RSA host key for foo.com has changed and you have requested strict checking.
Host key verification failed.
After a recent update, ttf-mscorefonts-installer prompted me to accept its license agreement.
┌─────────────────┤ Configuring ttf-mscorefonts-installer ├─────────────────┐
│ │
│ TrueType core fonts for the Web EULA
│
│ END-USER LICENSE AGREEMENT FOR MICROSOFT SOFTWARE
│
│ IMPORTANT-READ CAREFULLY: This Microsoft End-User License Agreement
│ ("EULA") is a legal agreement between you (either an individual or a
│ single entity) and Microsoft Corporation for the Microsoft software
│ accompanying this EULA, which includes computer software and may include
│ associated media, printed materials, and "on-line" or electronic
│ documentation ("SOFTWARE PRODUCT" or "SOFTWARE"). By exercising your
│ rights to make and use copies of the SOFTWARE PRODUCT, you agree to be
│ bound by the terms of this EULA. If you do not agree to the terms of
│ this EULA, you may not use the SOFTWARE PRODUCT.
│
│ <Ok>
│ │
└───────────────────────────────────────────────────────────────────────────┘
Screenshot:
For some reason my terminal will not allow me to accept, or for some reason I am pressing the wrong hotkey... I've tried every letter on the keyboard and Enter among others... I'm sure there is a very simple and obvious solution to this.
I've also just tried to remove the package completely however the terminal states that due to the package not being correctly installed, I should reinstall the package before removing it. Very frustrating! Essentially, because I cannot successfully install this package, I can't really ever upgrade my system because I always have to end up terminating the terminal with the license agreement (thus the upgrade fails).
My system is not dual-boot, I run a standard Ubuntu desktop system "on the metal" (I think running it in a VM is the same).
Pressing c while booting does not cause the GRUB menu to appear (which I believe it does for a dual-boot system).
How can I get the GRUB-menu to present itself on a single-boot system?
sudo apt-get upgrade installs all updates, not just security updates. I know that I can use Update Manager to select only important security updates, but is there a way to do this from the command line?