Author

Nawawi Jamili

51 articles, page 2 of 6

9 Oct 2026

Bash Strict Mode: What set -euo pipefail Really Does

set -euo pipefail is good advice, but each option has rules about when it fires. Here is what each one does and the cases that surprise people.

7 min read

8 Oct 2026

Bash

Read a File Line by Line in Bash (the Right Way)

while IFS= read -r line is the correct loop, but the last line, pipes, commands that read stdin and Windows line endings each have a trap. Here they are, tested.

7 min read

7 Oct 2026

Bash

str_pad() in Bash: Pad a String to a Fixed Length

PHP-compatible str_pad() in pure Bash, when printf "%-10s" and %05d are enough, and why multibyte text breaks the alignment of your columns.

5 min read

6 Oct 2026

Bash

in_array() in Bash: Check if an Array Contains a Value

A correct in_array() for Bash, an associative-array set for many lookups, and a demonstration of why [[ "${arr[*]}" =~ value ]] gives false positives.

5 min read

6 Oct 2026

Programming

Debounce vs Throttle in JavaScript, With a Timeline Demo

Two small functions that stop search boxes and scroll handlers from running too often, with a runnable timeline that shows exactly when each one fires.

7 min read

5 Oct 2026

Bash

explode() and implode() in Bash: Split and Join Strings

PHP's explode() and implode() in Bash: read -ra and mapfile -d for splitting, "${arr[*]}" for joining, and functions that cope with multi-character delimiters.

6 min read

2 Oct 2026

Web

nginx as a Reverse Proxy: Headers, WebSockets and Timeouts

What the backend really receives behind nginx: proxy_pass URI rewriting, Host and X-Forwarded headers, WebSocket upgrades, 504s from timeouts, and streaming.

9 min read

2 Oct 2026

Bash