I’m a fan of ZFS filesystem. It’s so good that I also use ZFS on most my Linux machines, though it’s painful at time when the ZFS kernel modules fail to compile. Why I like it so much comparing to other file system such as XFS, EXT4, BTRFS? ZFS allows me to quickly do snapshots and efficiently send snapshots over the network, and my nas runs FreeBSD which support ZFS natively....
You’ve been using Linux for a while, so you must have seen or used this command before: cat. It’s used to concatenate files and print on the standard output. But do you know there is another command spelled it reversed tac? tac is like cat, but print files in reverse. Here is an example which cat could be handy. I need to print out the last login user in reverse. (By the default, it prints the last login first....
Are you still rocking your X1 Carbon Gen 6 in 2020? Well, Lenovo just released a new BIOS firmware 1.50. Here are changes in this release: [Important updates] - Update includes a security fix. - Addresses CVE-2020-8696 and CVE-2020-8698. (https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-8696) (https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-8698) - Addresses CVE-2020-0587, CVE-2020-0588, CVE-2020-0590, CVE-2020-0591, CVE-2020-0592, and CVE-2020-0593. (https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-0587) (https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-0588) (https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-0590) (https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-0591) (https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-0592) (https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-0593) [New functions or enhancements] - Updated the CPU microcode. - Updated the Diagnostics module to version 04....
While creating a new user account on one my servers running FreeBSD 12, I encountered the following error: root@nas2:~ # adduser Username: devops Full name: Ansible Operator Uid (Leave empty for default): Login group [devops]: Login group is devops. Invite devops into other groups? []: Login class [default]: Shell (sh csh tcsh nologin) [sh]: Home directory [/home/devops]: Home directory permissions (Leave empty for default): Use password-based authentication? [yes]: no Lock out the account after creation?...
While practicing with certificates reqeust using FreeIPA, I came across this duplicated certificates for the first time. This happened because I also practiced the same thing a few weeks ago. Here is how to re-produce this message: [root@client ~]# ipa-getcert request \ -f /etc/vsftpd/certs/cert.pem \ -k /etc/vsftpd/certs/cert.key \ -K ftp/client.lab.example.net \ -D client.lab.example.net Certificate at same location is already used by request with nickname "20201008131445". Because I’m still not familiar yet with FreeIPA on this certificate topic, I turned to Google search and found very useful information on this blog post: Dealing with Duplicate SSL certs from FreeIPA....