Install these packages and restart file manager
sudo xbps-install libheif libheif-toolsNote: HEIC thumbnails in pcmanfm didn’t work for me.
… Read morevoid linux: recover from grub, kernel panic using live OS
# mount & chroot to void
cryptsetup open /dev/nvme0n1p2 root
mount /dev/mapper/root /mnt
mount /dev/nvme0n1p1 /mnt/boot
mount --rbind /sys /mnt/sys && mount --make-rslave /mnt/sys
mount --rbind /dev /mnt/dev && mount --make-rslave /mnt/dev
mount --rbind /proc /mnt/proc && mount --make-rslave /mnt/proc
chroot /mnt /bin/bash
# regenerate initramfs and grub config
VERSION=5.18.16_1
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How to renew the SSL certificates for dovecot and postfix
Make a backup of the existing SSL key and certificate file
cd /etc/pki/dovecot cp -a certs/dovecot.pem certs/dovecot.pem.old cp -a private/dovecot.pem private/dovecot.pem.old
Create the new SSL certificate for two years:
openssl genrsa -out private/dovecot.pem 1024 openssl req -new -x509 -key private/dovecot.pem -out certs/dovecot.pem -days 730
Restart Dovecot and Postfix
sudo systemctl
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What is DevOps?
1. Definition from Wikipedia:
DevOps (a clipped compound of “development” and “operations”) is a set of software development practices[failed verification] that combines software development (Dev) with information technology operations (Ops) to shorten the systems development life cycle while delivering features, fixes, and updates frequently in close alignment with business objectives.… Read more
How to auto login in MySQL from a shell?
When you run MySQL commands MySQL, mysqlcheck, mysqdump and psql, psqldump, etc; they will pick username & password from this file if you do not provide them as argument (-u and -p). It can save you time.
Of course, if you specify username and password explicitly as part of the … Read more
Still Confused With Mail Ports?
This article explains the most commonly used Email protocols on the internet – POP3, IMAP, and SMTP
- SMTP 25, 2525
- SMTP-SSL/TLS 587,465
- IMAP 143
- IMAP-SSL/TLS 993
- POP3 110
- POP3-SSL/TLS 995
587 vs. 465
These port assignments are specified by the Internet Assigned Numbers Authority (IANA):
Port 587: [SMTP] Message … Read more
How to install the latest git from source
git-install-latest-from-src.sh
wget https://github.com/git/git/archive/master.zip unzip master.zip && rm master.zip cd master make configure ./configure --prefix=/usr make install