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Click file names below to display a given help file in your browser, or
browse through (unformatted) notes on dozens more procedures and references here

Application Installation, Removal and Maintenance
Remove Snap-installed Application and Destroy the Saved Snapshot
File Systems And Partitions
Fix Corrupt Blocks (bad "magic number")

change size of vmware swapfile
Browsers and Alternate Browsers
install chrome from CLI
Compression
tar Command (including tar.gz and tar.bz2)

zip Command

7zip Command
Task Scheduling
crontab Command
Desktop Configuration
get rid of klipper clipboard widget
VPN-DNS-security
set static dns servers of your own choice

create your own no-logs vpn server
Vmware-Virtalbox
mount the shared folder after you create it in vmware-player
Passwords-Encryption
open luks-encrypted drive with keyfile instead of password

create secure passwords from linux command line

python script to encrypt all the files in a directory

python script to decrypt files encrypted with encrypt-files
File Manipulation
cat and tac: read, create, write to, append, overwrite, read-in-reverse, files; and exclude files from output

convert mp4 mpeg avi webm to mp3 sound only

erase file contents

convert rpm to deb format
Operating Systems
initialize and update signing keys for Arch-Linux repositories

fix pesky update/upgrade corrupt-key problems in pacman

troubleshoot pacman "failed to commit" error
Website Security
renew cert-bot certificate and other info on LetsEncrypt project - free https encrypt
Hardware Optimization
set cpu to performance mode
SSH commands and transfer solutions
rsync to transfer directories and files over ssh using keyfile
Hardware and Maintenance
List motherboard and system temperatures