FOSS

After some time working on it (about 6 months for the main work and some more time for the reviews) with my colleagues Miguel and Scott, we’ve finally made it thanks to the support from our families and Packt, as well as several members of RH teams that gave the clearance to get it out! The book targets users willing to learn skills to administer Red Hat Enterprise Linux or compatible systems. It is a hands-on guide to the administration and can be used as reference thanks to the real-life examples provided along the text. ...

Until two weeks ago I was using an IMAP server (based on Zimbra) for my work email, but the date for migration to Gmail arrived with no choice to postpone… I was very tied to using my current setup, where: offlineimap was downloading all the email to a local maildir folder, imapfilter classified the email into folders based on local options mutt accessed the maildir folder for working with the emails a script to remove duplicate emails from disk imapdedup.py before next sync But, with the change and peculiarities for Gmail, it was no longer working… I was trying several times with different combinations of folder translations but each one took approximately one day to sync all emails, to find out the next issue with the folder translation. ...

Hi, In case you’ve a dual boot machine, sometimes it might happen that grub menu is no longer appearing. For systems using regular BIOS, a grub-install against the device it was installed might be required, but when using UEFI, it’s really easy to use a rescue media and execute efibootmgr to alter the boot order. When executing efibootmgr, it might output some information like this: BootCurrent: 0001 Timeout: 0 seconds BootOrder: 0001,0019,001D,001C,0017,0018,001A,001B,001E,001F,0020,0000 Boot0000* Windows Boot Manager Boot0001* Fedora Boot0010 Setup Boot0011 Boot Menu Boot0012 Diagnostic Splash Screen Boot0013 Lenovo Diagnostics Boot0014 Startup Interrupt Menu Boot0015 Rescue and Recovery Boot0016 MEBx Hot Key Boot0017* USB CD Boot0018* USB FDD Boot0019* NVMe0 Boot001A* NVMe1 Boot001B* ATA HDD2 Boot001C* ATA HDD3 Boot001D* ATA HDD0 Boot001E* ATA HDD1 Boot001F* USB HDD Boot0020* PCI LAN Boot0021* IDER BOOT CDROM Boot0022* IDER BOOT Floppy Boot0023* ATA HDD Boot0024* ATAPI CD Note there, the BootCurrent and the BootOrder, the numbers in the BootOrder correspond to the Boot#### that are listed below it. ...

For some of the telegram groups I’m in, I’ve been detecting users that after some period of time, just publish spam messages of any topic. There are many bots for controlling when a user joins, by showing a CAPTCHA that user must resolve (either clicking a button, answering a mathematical operation, inputting a CAPTCHA image text, etc). Some time ago, a colleague was using Machine Learning and I wanted to have a look at it and it would make a good feature to implement. ...

Some years ago I started using geo replication to keep a copy of all the pictures, docs, etc After being using BitTorrent sync and later resilio sync (even if I didn’t fully liked the idea of it being not open source), I gave up. My NAS with 16 GB of ram, even if a bit older (HP N54L), seemed not to have enough memory to run it, and was constantly swapping. ...