shellkit

Portable shell utility library — source it and use the functions.

Install

source shellkit.sh
# or
curl -fsSL https://raw.githubusercontent.com/abirkhan3323-source/shellkit/main/shellkit.sh | source /dev/stdin

Functions

Function	Description
check "msg" cmd	Assert a condition with ✓/✗ output
ensure brew	Install a tool if not present
spinner "msg" cmd	Run a command with animated spinner
backup /path	Create timestamped backup
confirm "go?"	Ask y/n prompt
bench "label" cmd	Time a command in milliseconds
random_string 32	Generate random alphanumeric string
jsonval '.key' file.json	Extract JSON value without jq
dedup file.txt	Remove duplicate lines, preserving order
coln 3	Extract column N from each line
sum	Sum a column of numbers
running "app" cmd	Keep a process running, restart on exit
is_port_free 3000	Check if a port is available
is_command git	Check if a command exists

Examples

source shellkit.sh

# Pre-deploy checklist
check "node installed" is_command node
check "port 3000 free" is_port_free 3000

# Timed backup
spinner "Backing up database..." pg_dump mydb > backup.sql
backup backup.sql

# Deploy with keepalive
running "web server" python -m http.server 8080