One-Liners

Quick reference for single-line shell commands. For helper functions see scripts/bash-helpers.sh and scripts/system-diagnostics.sh. For extended examples see references/bash-oneliners.md and references/advanced-oneliners.md. Structured examples in examples/common-oneliners.json.

File Operations

# Find by name, size, or age
find . -name "*.log" -type f
find . -type f -size +100M -exec ls -lh {} +
find . -type f -mtime -1                          # Modified in last 24h
find . -type f \( -name "*.ts" -o -name "*.tsx" \)

# Bulk rename
for f in *.jpeg; do mv "$f" "${f%.jpeg}.jpg"; done
for f in *; do mv "$f" "$(echo "$f" | tr 'A-Z' 'a-z')"; done
n=1; for f in *.png; do mv "$f" "$(printf '%03d.png' $n)"; ((n++)); done
rename 's/IMG_(\d+)/photo_$1/' *.jpg               # Perl rename