sfpprxy

To see current swap usage

sysctl -a | grep swap

Use only when when your system is in a very bad shape

$ sudo pkill -HUP -u _windowserver 

sfpprxy

make sure the following lines are set in /etc/sshd_config (or /etc/ssh/sshd_config on ubuntu)
(they all exist already, but are commented, some may have a value of yes)

PasswordAuthentication no
ChallengeResponseAuthentication no
UsePAM no

then restart the ssh server (uncheck / recheck 'Remote Login' in the 'System Preferences' -> 'Sharing' panel)

sfpprxy

#!/bin/sh

wget https://mirrors.cnnic.cn/apache/maven/maven-3/3.5.2/binaries/apache-maven-3.5.2-bin.tar.gz
tar xzf apache-maven-3.5.2-bin.tar.gz
mkdir /opt/maven
mv apache-maven-3.5.2/ /opt/maven/
alternatives --install /usr/bin/mvn mvn /opt/maven/apache-maven-3.5.2/bin/mvn 1
alternatives --config mvn

sfpprxy

import SimpleHTTPServer
class CORSHTTPRequestHandler(SimpleHTTPServer.SimpleHTTPRequestHandler):
    def send_head(self):
        """Common code for GET and HEAD commands.

        This sends the response code and MIME headers.

        Return value is either a file object (which has to be copied
        to the outputfile by the caller unless the command was HEAD,
        and must be closed by the caller under all circumstances), or