1. vue create PROJECT_NAME
2. 添加一般常用组件 router vuex axios:
vue add axios
vue add router
vue add vuex
vue add ant-design
3. npm run serve
写一下今天折腾树莓派加红外线元件的事情
设备：树莓派3b， CHQ1838 红外接受元件
连接比较简单，使用gpio18接口，接地，接5v，升级完系统后 怎么也不能正确启动lirc服务，并且/dev目录下没有lirc0 设备，这可愁坏了，还以为我的CHQ1838 这个元器件是个山寨货，不支持，一直google，想不明白，google 到下午，发现一个网页说，系统版本升级后会有问题，我一琢磨，我好像也是先安装了lirc 然后给系统做了版本升级，哎呀，一拍大腿，试试他这个方法，
修改/boot/config.txt文件，原先的那一串改为：
dtoverlay=gpio-ir,gpio_in_pin=18
重启，就行了
=========================================================
后面开始测试接收，电视机的遥控器简单，重点在于那个空调遥控器，
mode2下能接收到那些pulse，irrecord –f –d /dev/lirc0 ~/kongtiaoraw.conf 模式下，显示10s no data receive，直接用mode2 接收到的 那些数字手动写 配置文件放到 lirc.conf.d目录下，启动lirc ，提示 Error: bad signal length， 编码确实很长，google无果，感觉今天是没招了
python连接SMTP服务器发送邮件
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#coding=utf8 import smtplib from email.mime.text import MIMEText from email.header import Header msg = MIMEText("Hello, send by python", "plain", "utf-8") msg['From'] = Header("Noreply", "utf-8") msg['Subject'] = Header("Yeeeeeeeeeeha", "utf-8") try: emailServer = smtplib.SMTP("mail.xxx.com", 25) emailServer.set_debuglevel(1) emailServer.login('username', 'password') emailServer.sendmail('noreply@xxx.com', ['xxxxxx@qq.com'], msg.as_string()) emailServer.quit() except smtplib.SMTPException: print("Error: Send email error") |
CentOS6 添加memecached自启动
复制使用请检查memcached 路径
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/etc/init.d目录下vim memcached: #! /bin/sh # # chkconfig: - 55 45 # description: The memcached daemon is a network memory cache service. # processname: memcached # config: /etc/sysconfig/memcached # Source function library. . /etc/rc.d/init.d/functions PORT=11211 USER=root MAXCONN=1024 CACHESIZE=64 OPTIONS="" if [ -f /etc/sysconfig/memcached ];then . /etc/sysconfig/memcached fi # Check that networking is up. if [ "$NETWORKING" = "no" ] then exit 0 fi RETVAL=0 start () { echo "Starting memcached ..." # insure that /var/run/memcached has proper permissions chown $USER /usr/local/bin/memcached /usr/local/bin/memcached -d -p $PORT -u $USER -m $CACHESIZE -c $MAXCONN -P /var/run/memcached.pid $OPTIONS RETVAL=$? echo [ $RETVAL -eq 0 ] && touch /var/lock/subsys/memcached } stop () { echo "Stopping memcached ..." killproc memcached RETVAL=$? echo if [ $RETVAL -eq 0 ] ; then rm -f /var/lock/subsys/memcached rm -f /var/run/memcached.pid fi } restart () { stop start } # See how we were called. case "$1" in start) start ;; stop) stop ;; status) status memcached ;; restart|reload) restart ;; condrestart) [ -f /var/lock/subsys/memcached ] && restart || : ;; *) echo $"Usage: $0 {start|stop|status|restart|reload|condrestart}" exit 1 esac exit $? #chmod 775 memcached #chkconfig --add memcached #chkconfig memcached on #service memcached start |
提示找不到libevent 请软连接，类似如下
ln -s /usr/local/lib/libevent-2.1.so.6 /usr/lib64/libevent-2.1.so.6
关于caddy的systemd文件
官方 提供的那个 有坑，坑在 systemd–networkd–wait–online.service 这里，按情况修改
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[Unit] Description=Caddy HTTP/2 web server Documentation=https://caddyserver.com/docs After=network-online.target Wants=network-online.target networkmanager-wait-online.service [Service] Restart=on-failure StartLimitInterval=86400 StartLimitBurst=5 ; User and group the process will run as. User=www-data Group=www-data ; Letsencrypt-issued certificates will be written to this directory. Environment=CADDYPATH=/etc/ssl/caddy ; Always set "-root" to something safe in case it gets forgotten in the Caddyfile. ExecStart=/usr/local/bin/caddy -quic -log stdout -agree=true -conf=/etc/caddy/Caddyfile -root=/var/tmp ExecReload=/bin/kill -USR1 $MAINPID ; Limit the number of file descriptors; see `man systemd.exec` for more limit settings. LimitNOFILE=1048576 ; Unmodified caddy is not expected to use more than that. LimitNPROC=64 ; Use private /tmp and /var/tmp, which are discarded after caddy stops. PrivateTmp=true ; Use a minimal /dev PrivateDevices=true ; Hide /home, /root, and /run/user. Nobody will steal your SSH-keys. ProtectHome=true ; Make /usr, /boot, /etc and possibly some more folders read-only. ProtectSystem=full ; … except /etc/ssl/caddy, because we want Letsencrypt-certificates there. ; This merely retains r/w access rights, it does not add any new. Must still be writable on the host! ReadWriteDirectories=/etc/ssl/caddy ; The following additional security directives only work with systemd v229 or later. ; They further retrict privileges that can be gained by caddy. Uncomment if you like. ; Note that you may have to add capabilities required by any plugins in use. ;CapabilityBoundingSet=CAP_NET_BIND_SERVICE ;AmbientCapabilities=CAP_NET_BIND_SERVICE ;NoNewPrivileges=true [Install] WantedBy=multi-user.target |
抄来的初始化脚本
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#!/bin/bash #zhangsen #lovexlzs@qq.com if [[ "$(whoami)" != "root" ]]; then echo "please run this script as root ." >&2 exit 1 fi echo -e "\033[31m 这个是centos7系统初始化脚本，请慎重运行！Please continue to enter or ctrl+C to cancel \033[0m" sleep 5 #configure yum source yum_config(){ yum install wget epel-release -y cd /etc/yum.repos.d/ && mkdir bak && mv -f *.repo bak/ wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo wget -O /etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-7.repo yum clean all && yum makecache yum -y install iotop iftop net-tools lrzsz gcc gcc-c++ make cmake libxml2-devel openssl-devel curl curl-devel unzip sudo ntp libaio-devel wget vim ncurses-devel autoconf automake zlib-devel python-devel bash-completion } #firewalld iptables_config(){ systemctl stop firewalld.service systemctl disable firewalld.service yum install iptables-services -y systemctl enable iptables systemctl start iptables iptables -F service iptables save } #system config system_config(){ sed -i "s/SELINUX=enforcing/SELINUX=disabled/g" /etc/selinux/config timedatectl set-local-rtc 1 && timedatectl set-timezone Asia/Shanghai yum -y install chrony && systemctl start chronyd.service && systemctl enable chronyd.service } ulimit_config(){ echo "ulimit -SHn 102400" >> /etc/rc.local cat >> /etc/security/limits.conf << EOF * soft nofile 102400 * hard nofile 102400 * soft nproc 102400 * hard nproc 102400 EOF } #set sysctl sysctl_config(){ cp /etc/sysctl.conf /etc/sysctl.conf.bak cat > /etc/sysctl.conf << EOF net.ipv4.ip_forward = 0 net.ipv4.conf.default.rp_filter = 1 net.ipv4.conf.default.accept_source_route = 0 kernel.sysrq = 0 kernel.core_uses_pid = 1 net.ipv4.tcp_syncookies = 1 kernel.msgmnb = 65536 kernel.msgmax = 65536 kernel.shmmax = 68719476736 kernel.shmall = 4294967296 net.ipv4.tcp_max_tw_buckets = 6000 net.ipv4.tcp_sack = 1 net.ipv4.tcp_window_scaling = 1 net.ipv4.tcp_rmem = 4096 87380 4194304 net.ipv4.tcp_wmem = 4096 16384 4194304 net.core.wmem_default = 8388608 net.core.rmem_default = 8388608 net.core.rmem_max = 16777216 net.core.wmem_max = 16777216 net.core.netdev_max_backlog = 262144 net.core.somaxconn = 262144 net.ipv4.tcp_max_orphans = 3276800 net.ipv4.tcp_max_syn_backlog = 262144 net.ipv4.tcp_timestamps = 0 net.ipv4.tcp_synack_retries = 1 net.ipv4.tcp_syn_retries = 1 net.ipv4.tcp_tw_recycle = 1 net.ipv4.tcp_tw_reuse = 1 net.ipv4.tcp_mem = 94500000 915000000 927000000 net.ipv4.tcp_fin_timeout = 1 net.ipv4.tcp_keepalive_time = 30 net.ipv4.ip_local_port_range = 1024 65000 EOF /sbin/sysctl -p echo "sysctl set OK!!" } main(){ yum_config iptables_config system_config ulimit_config sysctl_config } main |
centos升级openssl
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wget https://www.openssl.org/source/openssl-1.1.1b.tar.gz tar -xzf openssl-1.1.1b.tar.gz cd openssl-1.1.1b ./config shared zlib make sudo make install #fix bin lib file link sudo ln -s /usr/local/lib64/libssl.so.1.1 /usr/lib64/ sudo ln -s /usr/local/lib64/libcrypto.so.1.1 /usr/lib64/ sudo ln -s /usr/local/bin/openssl /usr/bin/openssl_latest cd /usr/bin/ mv openssl openssl_old mv openssl_latest openssl rm /usr/lib64/libssl.so ln -s /usr/local/lib64/libssl.so.1.1 /usr/lib64/libssl.so |
that’s all
记centos6 编译python3.7.3遇到的openssl问题
#记录一下centos6 编译python3.7.3遇到的问题，
##最大的问题就是需要升级openssl
##按照百度到的教程升级 还是没有openssl
##具体表现为 configure python 后
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checking for X509_VERIFY_PARAM_set1_host in libssl… no
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##但是openssl version 确是新版本
##其实是libssl.so 在作怪，它还是链接的老版本的libssl库文件
##删除它，然后重新ln -s 即可
##到 /usr/lib64/目录
##rm libssl.so
##ln -s /usr/local/lib64/libssl.so.1.1 /usr/lib64/libssl.so
## 重新configure
mysql触发器更新字段为自增id
第一种方法，是使用 information_schema 查询自增id设置到new字段上
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CREATE DEFINER=`root`@`localhost` TRIGGER `update_listorder` BEFORE INSERT ON `v9_test` FOR EACH ROW SET new.listorder=( SELECT AUTO_INCREMENT FROM information_schema.`TABLES` WHERE TABLE_SCHEMA='test' AND TABLE_NAME='v9_test') |
第二种方法，是使用max函数查询出表中的最大id（这种方法在某些情况下不适用，并不等于下一个自增ID）
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CREATE DEFINER=`laoganbuju`@`10.254.41.%` TRIGGER `update_listorder` BEFORE INSERT ON `v9_position_data` FOR EACH ROW SET new.listorder=( SELECT MAX(id) FROM v9_position_data) +1 |
这个办法是不修改代码的情况下，让一个表的order字段在插入操作时默认是自增id，奇技淫巧
use nodeMCU make ssd1306 light
NodeMCU 刷1.5.4固件
SSD1306采用 I2C 接口4针
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sda = 5 -- 接D5 scl = 6 -- 接D6 i2c.setup(0, sda, scl, i2c.SLOW) sla = 0x3c --这个3C不能修改 disp = u8g.ssd1306_128x64_i2c(sla) disp:setFont(u8g.font_6x10) str = "Temperature:" str2="Humidity:" function draw() disp:drawStr(0, 16, str) disp:drawStr(0, 32, str2) end disp:firstPage() while (disp:nextPage()) do draw() end |