Linux
WireGuard Client Setup and Disconnection on Ubuntu
Jason Yang · 12 Nov, 2025
Install and manage a WireGuard VPN client on Ubuntu: set it up, connect with wg-quick up, verify the status, and safely disconnect.
Blog posts — page 44
Linux
Batch Rename Files Using 'rename' and Regex
Jason Yang · 12 Nov, 2025
Bulk-rename files in Linux with the rename command and Perl regex: normalize whitespace, strip unwanted metadata, and batch-rename in one quick command.
Coding Interview
1. Two Sum
Jason Yang · 11 Nov, 2025
Two Sum (LeetCode 1) two ways: the brute-force O(n^2) scan vs the hash-map O(n) approach — with the intuition, edge cases, and the space-time trade-off.
Linux
Stop Fighting Your IME in Vim - Auto-Switch with `vim-im-select`
Jason Yang · 11 Nov, 2025
Fix Vim keeping your IME active in Normal mode (stray Korean/Japanese on j or dd): set up vim-im-select with ibus for automatic, seamless IME switching.
Linux
Fix Bluetooth Audio Stutter in Chrome on Ubuntu 24 (The A2DP Lock)
Jason Yang · 10 Nov, 2025
Chrome breaking Bluetooth audio on Ubuntu 24? Permanently fix the stutter by locking your device to the high-fidelity A2DP profile with pavucontrol.