Guy Chait gchait

gchait / inline-java.sh

Created December 13, 2025 13:05

Run Java stdlib from Bash without JShell

	echo 'public class X{public static void main(String[]a)throws Exception{System.out.println(java.net.InetAddress.getLocalHost().getCanonicalHostName());}}' > X.java \
	&& javac X.java && java X && rm X.java X.class

gchait / git-dl.sh

Created December 13, 2025 13:15

Download a Git repository at a specific commit

	mkdir -p xxx
	cd ./xxx
	git init -q

	git remote add origin git@aaa.zzz.com:yyy/xxx.git
	git fetch origin "${SHA}"
	git checkout -q FETCH_HEAD

gchait / aws-profile-from-acc.sh

Created December 13, 2025 13:25

Set AWS profile given an account ID

	export AWS_PROFILE=$(grep -B20 "${ACCOUNT_ID}" ~/.aws/config \| \
	grep "^\[" \| tail -1 \| tr -d "[]" \| awk '{print $NF}')

gchait / spark-cpu-ms.sh

Created December 14, 2025 18:23

Sum the CPU time an Apache Spark Application took

	curl -s https://xxx.yyy.com:18080/api/v1/applications/app-zzz-123/stages \| \
	jq '[ .[] \| .executorCpuTime // 0 ] \| add / 1e6'

gchait / android-debloat.sh

Last active December 15, 2025 21:12

Debloat matching packages via ADB without root

	#!/bin/bash -eu
	set -o pipefail

	readonly USER_ID=0

	list_packages() {
	local flags="${1:-}"
	local cmd=(adb shell cmd package list packages --user "${USER_ID}")

	[[ -n "${flags}" ]] && cmd+=("${flags}")

gchait / inspect-docker-server.sh

Created February 6, 2026 11:52

Quickly analyze basic stats of a Docker Server

	#!/bin/bash -eu

	sudo fastfetch --logo none -s \
	'Separator:LocalIp:OS:Host:Kernel:Uptime:Separator:CPU:CPUUsage:Loadavg:Separator:Memory:Disk:Separator:Processes'

	printf "Docker Volumes: "
	sudo docker volume ls \| wc -l
	echo

	sudo docker stats --no-stream --format \