Miscellaneous

  • Invert image colors gm convert <input> -negate <output>

  • Copy directory recursively cp -r /source/ /dest/

  • curl basic auth: curl -u username:password https://example.com

  • Trigger sentry cleanup docker exec sentry_onpremise_sentry-cleanup_1 gosu sentry sentry cleanup --days <number of days>

  • Check TLS version of a website openssl s_client -connect example.com:443 -tls1_2

  • Fill memory cat /dev/zero | head -c 3G | tail