increase_limits

#!/bin/bash

if [ -z $SUDO_USER ]; then
  echo "Please run the script using sudo, e.g.,"
  echo ""
  echo "sudo ./increase_limits"
  exit 1
fi

echo "Your current limits:"
launchctl limit | grep max

if [[ `csrutil status` == 'System Integrity Protection status: enabled.' ]]; then
  echo
  echo "Noting that System Integrity Protection (SIP) is enabled."
  echo "You should not need to disable it for limits changes to take effect."
  echo
fi

echo
echo "Your current maxfiles limits (soft limit on the left, hard limit on the right):"
launchctl limit | grep maxfiles
echo
echo "Would you like to set maxfiles to 10240?"
read -p "Are you sure? (y/n) " -n 1 -r

if [[ $REPLY =~ ^[Yy]$ ]]; then
  cp ./limit.maxfiles.plist /Library/LaunchDaemons/limit.maxfiles.plist
  chown root:wheel /Library/LaunchDaemons/limit.maxfiles.plist
  chmod 644 /Library/LaunchDaemons/limit.maxfiles.plist
  
  echo
  echo "New maxfiles limits have been set. A reboot will be required for them to take effect."
else
  echo
  echo "Action aborted. maxfiles limit settings have not been changed."
fi

echo
echo "Your current maxproc limits (soft limit on the left, hard limit on the right):"
launchctl limit | grep maxproc
echo "Would you like to set maxproc to 2048? (Only do this if your soft limit is less than 2048.)"
read -p "Are you sure? (y/n) " -n 1 -r

if [[ $REPLY =~ ^[Yy]$ ]]; then
  cp ./limit.maxproc.plist /Library/LaunchDaemons/limit.maxproc.plist
  chown root:wheel /Library/LaunchDaemons/limit.maxproc.plist
  chmod 644 /Library/LaunchDaemons/limit.maxproc.plist

  echo
  echo "New limits have been set. A reboot will be required for them to take effect."
else
  echo
  echo "Action aborted. maxproc limit settings have not been changed."
fi