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macOS · Bash

Flush the DNS Cache on macOS

Flushes the dscacheutil cache and reloads mDNSResponder. Requires root.

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Last reviewed: November 6, 2026
CODE

Script

flush-dns-macos.sh
#!/bin/bash
dscacheutil -flushcache
killall -HUP mDNSResponder
echo "DNS cache flushed"
Caution: Running a script is a sensitive action. Do not run code you have not read. A non-zero exit code shows as a failure in Moftgate output.
HOW IT WORKS

Run it on every device with Moftgate

  1. 01

    Add the script

    In the Moftgate console, open Scripts > New script and paste the code.

  2. 02

    Select the OS

    Select macOS as the target operating system.

  3. 03

    Test it

    Run it on one test device first and read the output.

  4. 04

    Roll out

    Send it to all targets by group, profile or tag. Each device result is recorded separately.

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