simon.schönbeck.dk

Tag: command

  • Quick Fedora release version upgrade command

    If you manage many Fedora machines here is a quick one-liner to upgrade Fedora to the next release version: 

    dnf --refresh upgrade -y && dnf system-upgrade download --releasever=42 -y && dnf system-upgrade reboot

    As of today Fedora is at version 42, but simply change the release version to the desired target for any past/future version.

    Please note that only one release version jump is supported by Fedora, e.g. from 41 to 42. If you need to upgrade from older versions to the latest, simply run the one-liner sequentially after each reboot.

  • Find a Windows Vista MAC Address

    Yesterday eve I had to add a laptop to my network which is using MAC address filtering. The laptop ran Windows Vista and I tried to locate its MAC address by using the good old ipconfig within a command prompt. This gave no results as apparently the network details only get listed once an actual network connection is made. As you probably have realised this is a catch-22 situation as without the MAC address registered on the router I was never going to make a network connection in the first place…!

    Actually the weird thing is that the MAC address is normally on a sticker on the bottom of laptops, but in this case there was no such sticker.

    Google as in most other cases provided a quick fix by pointing me in the right direction. There is a command specifically for this task named funnily enough: getmac.

  • Empty Trash from the terminal

    For some reason I can not recall I went into my Trash bin on Fedora. There was unsurprisingly a lot of trash!

    I decided to empty the Trash bin but it only succeeded partially. I had a DVD directory that did not want to be deleted. Looking closer at the message it was a permissions error. Not sure how though, since if I did not have permissions to delete the directory from the Trash bin, how on Earth could I have moved it into the Trash bin to start with…!

    Looking around my home directory in the terminal I could not locate the exact spot to manually remove the directory. As always Google came to assistance and brought up a nice forum topic about how to empty the Trash bin in Fedora from the terminal.

    The simplest way would be to run the following command as root:

    rm -rf  ~/.local/share/Trash/files/*

  • Home and End keys in PuTTY

    I wondered why sometimes the Home and End keys work as expected during a SSH session via PuTTY and some other times it just writes tildes (~) instead. When writing long commands it is a real annoyance having to press down the left arrow to get back to the beginning of the command.

    A simple solution which worked for me was to change the Terminal-type String under the Connection > Data tab from the default “xterm” to simply “linux”:

    PuTTY Terminal Type String

    Now you should be able to use your Home and End keys to easily move the cursor back and forth during a SSH session using PuTTY.