cloud engineer
Here’s how to format a USB drive on Linux.
Plug in the USB drive to see mount point.
# scan for all drives df -Th Filesystem Type Size Used Avail Use% Mounted on /dev/sdc1 fuseblk 30G 66M 30G 1% /media/ulysses/451B99AF225B48EC |
Unmount USB drive.
umount /dev/sdc1 |
Choose a file system type and run the appropriate format command.
# nfts format mkfs.ntfs /dev/sdc1 # vfat format mkfs.vfat /dev/sdc1 # ext4 format mkfs.ext4 /dev/sdc1 |
There are times you just want to print directly from the command line.
# check your printing options lpotions lpinfo -v # what's your default printer lpinfo -p -d # use lp to print lp notes.txt # use -n print multiple copies lp -n 2 notes.txt # check the printer queue lp -q # use the job number to cancel print jobs if needed cancel 123 |
Snap is cool, but not for everyone. To remove, follow these steps.
# get list snap list # remove snaps. repeat for each app. snap remove chromium # remove snapd apt purge snapd # remove snap from home rm -rf ~/snap # clean up cache rm -rf /var/cache/snapd apt purge snapd |
If you use LightSail, AWS provides an easy way for you to connect to LightSail instances via Web SSH. I normally use a terminal (ssh client) to connect to LightSail instances, but using Web SSH is very convenient. If you try to do an OS upgrade, for example from Ubuntu 18.04 LTS to Ubuntu 20.04 LTS, you will break Web SSH. AWS has added a special Web SSH configuration on LightSail base images. The error you’ll get is “Upstream Error 515.” The only way to fix this is to get AWS Support to help you apply the fix. It’s not a make or break it deal, but it can be a nuisance if you prefer to use AWS Web SSH instead of a terminal. If you need a more secure SSH connection, consider uploading your ssh-key to the server, and disable password login.
I upgraded my desktop to Linux Mint 20 Ulyana over the weekend.
Edit your package repository. Replace tricia with ulyana, and bionic with focal.
vim /etc/apt/sources.list.d/official-package-repositories.list |
Run update first.
apt update -y apt upgrade -y |
Perform upgrade to Linux Mint 20. When prompted, choose default.
apt dist-upgrade |
Reboot.
reboot |
cat /etc/os-release.
ulysses@penguin:~/Code$ cat /etc/os-release NAME="Linux Mint" VERSION="20 (Ulyana)" ID=linuxmint ID_LIKE=ubuntu PRETTY_NAME="Linux Mint 20" VERSION_ID="20" HOME_URL="https://www.linuxmint.com/" SUPPORT_URL="https://forums.ubuntu.com/" BUG_REPORT_URL="http://linuxmint-troubleshooting-guide.readthedocs.io/en/latest/" PRIVACY_POLICY_URL="https://www.linuxmint.com/" VERSION_CODENAME=ulyana UBUNTU_CODENAME=focal |