internal/skills/catalog/chage/SKILL.md
# chage — Password Age Management ## Category User & Group Management ## License BSD-3-Clause (shadow-utils) ## Source https://github.com/shadow-maint/shadow (included in all Linux distributions) ## Purpose View and set password aging parameters — expiration, min/max age, warning days. ## Use Cases - Audit password policies per user - Detect accounts with non-expiring passwords - Verify password rotation compliance - Check password expiration dates ## Examples ```bash # View password aging
npx skillsauth add ggp1/mitiga internal/skills/catalog/chageInstall this skill globally with one command. Works with Claude Code, Cursor, and Windsurf.
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User & Group Management
BSD-3-Clause (shadow-utils)
https://github.com/shadow-maint/shadow (included in all Linux distributions)
View and set password aging parameters — expiration, min/max age, warning days.
# View password aging info for a user
chage -l username
# View for all users (loop)
getent passwd | cut -d: -f1 | xargs -I{} sh -c 'echo "=== {} ===" && chage -l {}'
chage -l is read-only and safe for auditing.chage -M, -m, -E) require system manager approval.development
# who / w — Logged-in Users ## Category User & Group Management ## License GPLv3+ (GNU coreutils) / GPLv2 (procps-ng) ## Source Included in all Linux distributions. ## Purpose Show who is currently logged in and what they are doing. ## Use Cases - Detect unauthorized active sessions - Monitor interactive logins in real-time - Identify login sources (IP, terminal) - Review idle times for active sessions ## Examples ```bash # All login information who -a # Currently logged-in users with act
development
# useradd / usermod / userdel — User Account Management ## Category User & Group Management ## License BSD-3-Clause (shadow-utils) ## Source https://github.com/shadow-maint/shadow (included in all Linux distributions) ## Purpose Create, modify, and delete user accounts. ## Use Cases - Create service accounts for Mitiga components - Modify user group memberships - Disable or remove compromised accounts - Audit account configurations ## Examples ```bash # Create a system service account (no
development
# ufw — Uncomplicated Firewall ## Category System Hardening ## License GPLv3 ## Source https://code.launchpad.net/ufw (included in Ubuntu/Debian) ## Purpose Simplified interface for managing iptables/nftables rules. ## Use Cases - Quick firewall status checks - Rule modifications on systems using ufw - Block malicious sources during incident response ## Examples ```bash # Show firewall status and rules ufw status verbose # Block a malicious IP ufw deny from <malicious_ip> # Allow a speci
development
# trivy — Comprehensive Vulnerability Scanner ## Category Vulnerability Scanning ## License Apache 2.0 ## Source https://github.com/aquasecurity/trivy (CNCF project) ## Purpose Scan filesystems, container images, Git repositories, and IaC configurations for known vulnerabilities (CVEs), misconfigurations, and exposed secrets. ## Use Cases - Audit project dependencies for known CVEs - Scan configuration files for misconfigurations - Detect embedded secrets in repositories - Scan container im