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Apply technical requirements (R1, R2, R9, R10, R13)
- R1: Add AWS_REGION to region fallback chain - R2: Replace openssl rand with /dev/urandom - R9: Remove Appendix/Generation details from READMEs - R10: Remove internal references - R13: Add REVISION-HISTORY.md
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‎tuts/179-cloudwatch-anomaly-detection/REVISION-HISTORY.md‎

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# Revision History: 179-cloudwatch-anomaly-detection
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## Shell (CLI script)
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### 2026-04-14 v1 published
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- Type: functional
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- Initial version
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‎tuts/179-cloudwatch-anomaly-detection/cloudwatch-anomaly-detection.sh‎

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#!/bin/bash
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WORK_DIR=$(mktemp -d); exec > >(tee -a "$WORK_DIR/ad.log") 2>&1
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REGION=${AWS_DEFAULT_REGION:-$(aws configure get region 2>/dev/null)}; [ -z "$REGION" ] && echo "ERROR: No region" && exit 1; export AWS_DEFAULT_REGION="$REGION"; echo "Region: $REGION"
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RANDOM_ID=$(openssl rand -hex 4); NS="Tutorial/AD-${RANDOM_ID}"; ALARM="tut-ad-alarm-${RANDOM_ID}"
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REGION=${AWS_DEFAULT_REGION:-${AWS_REGION:-$(aws configure get region 2>/dev/null))}; [ -z "$REGION" ] && echo "ERROR: No region" && exit 1; export AWS_DEFAULT_REGION="$REGION"; echo "Region: $REGION"
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RANDOM_ID=$(cat /dev/urandom | tr -dc 'a-z0-9' | fold -w 8 | head -n 1); NS="Tutorial/AD-${RANDOM_ID}"; ALARM="tut-ad-alarm-${RANDOM_ID}"
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cleanup() { echo ""; echo "Cleaning up..."; aws cloudwatch delete-alarms --alarm-names "$ALARM" 2>/dev/null && echo " Deleted alarm"; aws cloudwatch delete-anomaly-detector --namespace "$NS" --metric-name Latency --stat Average 2>/dev/null && echo " Deleted detector"; rm -rf "$WORK_DIR"; echo "Done."; }
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echo "Step 1: Publishing baseline metrics"
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for i in $(seq 1 20); do aws cloudwatch put-metric-data --namespace "$NS" --metric-name Latency --value $((50 + RANDOM % 20)) --unit Milliseconds; done

‎tuts/189-cloudwatch-contributor-insights/REVISION-HISTORY.md‎

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# Revision History: 189-cloudwatch-contributor-insights
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## Shell (CLI script)
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### 2026-04-14 v1 published
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- Type: functional
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- Initial version
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‎tuts/189-cloudwatch-contributor-insights/cloudwatch-contributor-insights.sh‎

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#!/bin/bash
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WORK_DIR=$(mktemp -d); exec > >(tee -a "$WORK_DIR/tut.log") 2>&1
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REGION=${AWS_DEFAULT_REGION:-$(aws configure get region 2>/dev/null)}; [ -z "$REGION" ] && echo "ERROR: No region" && exit 1; export AWS_DEFAULT_REGION="$REGION"; echo "Region: $REGION"
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REGION=${AWS_DEFAULT_REGION:-${AWS_REGION:-$(aws configure get region 2>/dev/null))}; [ -z "$REGION" ] && echo "ERROR: No region" && exit 1; export AWS_DEFAULT_REGION="$REGION"; echo "Region: $REGION"
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echo "Step 1: Listing existing rules"
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aws cloudwatch describe-insight-rules --query 'InsightRules[:5].{Name:Name,State:State}' --output table 2>/dev/null || echo " No insight rules"
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echo "Step 2: Listing log groups for analysis"

‎tuts/195-cloudwatch-composite-alarms/REVISION-HISTORY.md‎

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# Revision History: 195-cloudwatch-composite-alarms
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## Shell (CLI script)
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### 2026-04-14 v1 published
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- Type: functional
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- Initial version
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‎tuts/195-cloudwatch-composite-alarms/cloudwatch-composite-alarms.sh‎

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#!/bin/bash
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WORK_DIR=$(mktemp -d); exec > >(tee -a "$WORK_DIR/tut.log") 2>&1
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REGION=${AWS_DEFAULT_REGION:-$(aws configure get region 2>/dev/null)}; [ -z "$REGION" ] && echo "ERROR: No region" && exit 1; export AWS_DEFAULT_REGION="$REGION"; echo "Region: $REGION"
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RANDOM_ID=$(openssl rand -hex 4); NS="Tutorial/Comp-${RANDOM_ID}"; A1="tut-cpu-${RANDOM_ID}"; A2="tut-mem-${RANDOM_ID}"; COMP="tut-composite-${RANDOM_ID}"
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REGION=${AWS_DEFAULT_REGION:-${AWS_REGION:-$(aws configure get region 2>/dev/null))}; [ -z "$REGION" ] && echo "ERROR: No region" && exit 1; export AWS_DEFAULT_REGION="$REGION"; echo "Region: $REGION"
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RANDOM_ID=$(cat /dev/urandom | tr -dc 'a-z0-9' | fold -w 8 | head -n 1); NS="Tutorial/Comp-${RANDOM_ID}"; A1="tut-cpu-${RANDOM_ID}"; A2="tut-mem-${RANDOM_ID}"; COMP="tut-composite-${RANDOM_ID}"
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cleanup() { echo "Cleaning up..."; aws cloudwatch delete-alarms --alarm-names "$COMP" "$A1" "$A2" 2>/dev/null && echo " Deleted alarms"; rm -rf "$WORK_DIR"; echo "Done."; }
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echo "Step 1: Publishing metrics"
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for i in $(seq 1 5); do aws cloudwatch put-metric-data --namespace "$NS" --metric-data "[{\"MetricName\":\"CPU\",\"Value\":$((RANDOM%100)),\"Unit\":\"Percent\"},{\"MetricName\":\"Memory\",\"Value\":$((RANDOM%100)),\"Unit\":\"Percent\"}]"; done

‎tuts/210-dynamodb-list-tables/REVISION-HISTORY.md‎

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# Revision History: 210-dynamodb-list-tables
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## Shell (CLI script)
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### 2026-04-14 v1 published
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- Type: functional
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- Initial version
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‎tuts/210-dynamodb-list-tables/dynamodb-list-tables.sh‎

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#!/bin/bash
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WORK_DIR=$(mktemp -d); exec > >(tee -a "$WORK_DIR/tut.log") 2>&1
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REGION=${AWS_DEFAULT_REGION:-$(aws configure get region 2>/dev/null)}; [ -z "$REGION" ] && echo "ERROR: No region" && exit 1; export AWS_DEFAULT_REGION="$REGION"; echo "Region: $REGION"
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REGION=${AWS_DEFAULT_REGION:-${AWS_REGION:-$(aws configure get region 2>/dev/null))}; [ -z "$REGION" ] && echo "ERROR: No region" && exit 1; export AWS_DEFAULT_REGION="$REGION"; echo "Region: $REGION"
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echo "Step 1: Listing tables"; aws dynamodb list-tables --query 'TableNames' --output table
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echo "Step 2: Table details"
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T=$(aws dynamodb list-tables --query 'TableNames[0]' --output text 2>/dev/null)

‎tuts/211-iam-list-users/REVISION-HISTORY.md‎

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# Revision History: 211-iam-list-users
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## Shell (CLI script)
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### 2026-04-14 v1 published
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- Type: functional
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- Initial version
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‎tuts/211-iam-list-users/iam-list-users.sh‎

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#!/bin/bash
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WORK_DIR=$(mktemp -d); exec > >(tee -a "$WORK_DIR/tut.log") 2>&1
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REGION=${AWS_DEFAULT_REGION:-$(aws configure get region 2>/dev/null)}; [ -z "$REGION" ] && echo "ERROR: No region" && exit 1; export AWS_DEFAULT_REGION="$REGION"; echo "Region: $REGION"
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REGION=${AWS_DEFAULT_REGION:-${AWS_REGION:-$(aws configure get region 2>/dev/null))}; [ -z "$REGION" ] && echo "ERROR: No region" && exit 1; export AWS_DEFAULT_REGION="$REGION"; echo "Region: $REGION"
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echo "Step 1: Listing IAM users"; aws iam list-users --query 'Users[].{Name:UserName,Created:CreateDate,PasswordLastUsed:PasswordLastUsed}' --output table
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echo "Step 2: User count"; echo " Total: $(aws iam list-users --query 'Users | length(@)' --output text) users"
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echo ""; echo "Tutorial complete. Read-only."; rm -rf "$WORK_DIR"

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