Grep Log Errors and Alert Shell Script (grep, Slack or Email)
Scan Linux log files for ERROR or CRIT lines with a Bash script: tail window, grep patterns, webhook…
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AWS S3 Sync Backup Shell Script for Linux (aws cli, Cron, Logs)
Backup directories to Amazon S3 with a Bash script: aws s3 sync, IAM role or profile, exclude patterns,…
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Bash case Statement Shell Script: CLI Menu for Linux Ops Tasks
Build a Bash case statement script for Linux ops: status, reload, logs subcommands, validate input, usage text, and…
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Disk Space Alert Shell Script (df Threshold, Email, Cron)
Alert when Linux disk usage crosses a threshold: parse df -P, email warning with df output, per-mount limits,…
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Ping Monitor Shell Script for Linux (Host Down Alert, Cron)
Monitor remote hosts with a Bash ping script: packet loss threshold, email when down, cooldown between alerts, and…
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Check if Process Is Running Shell Script (pgrep, Nagios, Cron)
Use a Bash script with pgrep to verify nginx, mysqld, or any daemon is running — exit 1…
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tar.gz Backup Directory Shell Script for Linux (Compress, Verify, Retention)
Backup a Linux directory with tar.gz in a shell script: timestamped archives, optional exclude patterns, test tarball integrity,…
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Load Average Alert Shell Script for Linux (Email, Threshold, nproc)
Monitor Linux load average with a Bash script: compare to CPU count, email when hot, attach top snapshot,…
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Find and Delete Old Files Shell Script (find -mtime, Dry-Run, Logs)
Delete old files safely on Linux with a Bash script: find -mtime retention, DRY_RUN preview, path allowlist, log…
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Wait for Port Open Shell Script (Bash Loop for MySQL, Redis, Deploy)
Block until a TCP port is open on Linux: Bash wait-for-port script with timeout, sleep interval, and use…
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