Increase open file limit on MacOS

file-limit-hax.sh

#!/usr/bin/env bash

cat > /tmp/limit.maxfiles.plist << EOF

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN"
        "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
  <dict>
    <key>Label</key>
    <string>limit.maxfiles</string>
    <key>ProgramArguments</key>
    <array>
      <string>launchctl</string>
      <string>limit</string>
      <string>maxfiles</string>
      <string>64000</string>
      <string>128000</string>
    </array>
    <key>RunAtLoad</key>
    <true/>
    <key>ServiceIPC</key>
    <false/>
  </dict>
</plist>
EOF

sudo cp /tmp/limit.maxfiles.plist /Library/LaunchDaemons
sudo chown root:wheel /Library/LaunchDaemons/limit.maxfiles.plist
sudo launchctl load -w /Library/LaunchDaemons/limit.maxfiles.plist

Source
Works on MacOS Sierra, other versions untested.

Persists settings across reboots.

#Usage

1. Download raw file
2. Make executable using chmod +x file-limit-hax.sh
3. ./file-limit-hax.sh