source /usr/share/git/completion/git-completion.bash

/usr/bin/gitk: line 3: exec: wish: not found.

$ git config --global core.editor "nano -w"

$ git config --global user.name "Firstname Lastname"
$ git config --global user.email "[email protected]"

$ git config --global color.ui true

$ git config --global core.quotepath false

git clone <repo location> <dir>

user  www www;     # 运行nginx的用户及用户组
worker_processes  2;   #启动的进程数
pid /var/run/nginx.pid;   #pid文件位置

# [ debug | info | notice | warn | error | crit ]
error_log  /var/log/nginx.error_log  info;  #日志存放及日志等级设置

events {
  worker_connections   2000;   #每个进程最大的连接数 默认1024
  # use [ kqueue | rtsig | epoll | /dev/poll | select | poll ] ;
  use kqueue;   #使用的处理机制 epoll可以容纳更多请求
}

http {
  include       conf/mime.types;    # 加载mime 
  default_type  application/octet-stream;  #默认文件类型

  log_format main      '$remote_addr - $remote_user [$time_local]  '
    '"$request" $status $bytes_sent '
    '"$http_referer" "$http_user_agent" '
    '"$gzip_ratio"';    #设置日志格式

  log_format download  '$remote_addr - $remote_user [$time_local]  '
    '"$request" $status $bytes_sent '
    '"$http_referer" "$http_user_agent" '
    '"$http_range" "$sent_http_content_range"';

  client_header_timeout  3m;
  client_body_timeout    3m;
  send_timeout           3m;

  client_header_buffer_size    1k;
  large_client_header_buffers  4 4k;

  gzip on;
  gzip_min_length  1100;
  gzip_buffers     4 8k;
  gzip_types       text/plain;   #设置压缩

  output_buffers   1 32k;
  postpone_output  1460;

  sendfile         on;
  tcp_nopush       on;

  tcp_nodelay      on;
  send_lowat       12000;

  keepalive_timeout  75 20;

  # lingering_time     30;
  # lingering_timeout  10;
  # reset_timedout_connection  on;


  server {    #server段
    listen        one.example.com;
    server_name   one.example.com  www.one.example.com;

    access_log   /var/log/nginx.access_log  main;

    location / {   #location段
      proxy_pass         http://127.0.0.1/;  #设置代理
      proxy_redirect     off;

      proxy_set_header   Host             $host;
      proxy_set_header   X-Real-IP        $remote_addr;
      # proxy_set_header  X-Forwarded-For  $proxy_add_x_forwarded_for;

      client_max_body_size       10m;
      client_body_buffer_size    128k;

      client_body_temp_path      /var/nginx/client_body_temp;

      proxy_connect_timeout      90;
      proxy_send_timeout         90;
      proxy_read_timeout         90;
      proxy_send_lowat           12000;

      proxy_buffer_size          4k;
      proxy_buffers              4 32k;
      proxy_busy_buffers_size    64k;
      proxy_temp_file_write_size 64k;

      proxy_temp_path            /var/nginx/proxy_temp;

      charset  koi8-r;
    }

    error_page  404  /404.html;  #定义404页面

    location /404.html {
      root  /spool/www;

      charset         on;
      source_charset  koi8-r;
    }

    location /old_stuff/ {
      rewrite   ^/old_stuff/(.*)$  /new_stuff/$1  permanent;  #rewrite重定向
    }

    location /download/ {
      valid_referers  none  blocked  server_names  *.example.com;

      if ($invalid_referer) {    #if判断条件
        #rewrite   ^/   http://www.example.com/;
        return   403;
      }

      # rewrite_log  on;
      # rewrite /download/*/mp3/*.any_ext to /download/*/mp3/*.mp3
      rewrite ^/(download/.*)/mp3/(.*)\..*$ /$1/mp3/$2.mp3 break;

      root         /spool/www;
      # autoindex    on;
      access_log   /var/log/nginx-download.access_log  download;
    }

    location ~* ^.+\.(jpg|jpeg|gif)$ {   #为静态资源设置缓存
      root         /spool/www;
      access_log   off;
      expires      30d;
    }
  }
}

http {
  upstream myproject {
    server 127.0.0.1:8000 weight=3;
    server 127.0.0.1:8001;
    server 127.0.0.1:8002;
    server 127.0.0.1:8003;
  }

  server {
    listen 80;
    server_name www.domain.com;
    location / {
      proxy_pass http://myproject;
    }
  }
}

http {
    proxy_cache_path  /data/nginx/cache  levels=1:2    keys_zone=STATIC:10m
    inactive=24h  max_size=1g;
    server {
        location / {
            proxy_pass             http://1.2.3.4;
            proxy_set_header       Host $host;
            proxy_cache            STATIC;
            proxy_cache_valid      200  1d;
            proxy_cache_use_stale  error timeout invalid_header updating
                                   http_500 http_502 http_503 http_504;
        }
    }
}

http {

    server {
    	listen 80;
    	server_name www.domain.com;
        return 301 https://www.domain.com$request_uri;
    }
}

server {
	listen 443 ssl http2;
	server_name google.domain.com;

	root /usr/share/nginx/html;
	index index.html index.htm;

	ssl on;
	ssl_certificate /etc/letsencrypt/live/domain.com/fullchain.pem;
	ssl_certificate_key /etc/letsencrypt/live/domain.com/privkey.pem;

    ssl_session_cache    shared:SSL:1m;
    ssl_session_timeout  5m;

    ssl_ciphers  HIGH:!aNULL:!MD5;

	ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
	ssl_prefer_server_ciphers on;
    ssl_dhparam /etc/letsencrypt/dhparams.pem;

	location / {
	        proxy_pass https://www.replace.com/;
	}
}

location ~ "^/proxy/(.*)$" {
        resolver 8.8.8.8;
        proxy_pass http://$1;
        proxy_redirect off;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $remote_addr;
        expires 7d;
}

server {
    listen       8080;
    server_name  mydomain;
    access_log   /log/path/logging.log;
    error_page   400 401 402 403 404 405 500 501 502 503 504  @error_page;

    location     @error_page {
        root       /var/www/html/;
        rewrite ^  https://domain.com/error/index.html;
        break;
    }

    location / {
        proxy_redirect          off;
        proxy_pass_header       Server;
        proxy_set_header        X-Real-IP $remote_addr;
        proxy_set_header        X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header        X-Scheme $scheme;
        proxy_set_header        Host $http_host;
        proxy_set_header        X-NginX-Proxy true;
        proxy_connect_timeout   5;
        proxy_read_timeout      240;
        proxy_intercept_errors  on;

        proxy_pass              http://127.0.0.1:1337;
    }
}

# run system activity accounting tool every 10 minutes
*/10 * * * * root /usr/lib/sa/sa1 1 1
# generate a daily summary of process accounting at 23:53
53 23 * * * root /usr/lib/sa/sa2 -A

/usr/lib/sa/sadc -F -L 1 1 -

# /usr/lib/sa/sadc 1 10 /tmp/jaylin_sa

/usr/bin/sar -A -f /var/log/sa/sa${DATE} > /var/log/sa/sar${DATE}

# /usr/bin/sar -A -f /tmp/jaylin_sa> /tmp/jaylin_sar

# sar
03:00:01 PM     CPU     %user     %nice   %system   %iowait    %steal    %idle
03:10:01 PM       all      1.02      0.00      2.33      0.39      0.00     96.25
03:20:01 PM       all      1.85      0.00      3.29      0.32      0.00     94.54
03:30:02 PM       all      1.63      0.06      3.81      2.05      0.00     92.45
03:40:02 PM       all      9.31      0.00      8.10      3.39      0.00     79.20
03:50:01 PM       all      8.64      0.00      7.73      2.27      0.00     81.36
04:00:01 PM       all      0.84      0.00      2.12      1.81      0.00     95.23
Average:          all      3.88      0.01      4.56      1.71      0.00     89.84

# # sar -f /var/log/sa/sa12 -s 14:50:00 -e 15:30:00
03:00:01 PM     CPU     %user     %nice   %system   %iowait    %steal     %idle
03:10:01 PM       all      1.02      0.00      2.33      0.39      0.00     96.25
03:20:01 PM       all      1.85      0.00      3.29      0.32      0.00     94.54
Average:          all      1.44      0.00      2.81      0.36      0.00     95.40

# LANG=C /usr/bin/sar -A -f /tmp/jaylin_sa> /tmp/jaylin_sar

12:00:01 AM     CPU      %usr     %nice      %sys   %iowait    %steal      %irq     %soft    %guest     %idle
12:10:01 AM     all     28.75      0.00      0.25      0.02      0.00      0.00      0.05      0.00     70.93
12:10:01 AM       0     42.95      0.00      0.51      0.04      0.00      0.00      0.39      0.00     56.12
12:10:01 AM       1     35.92      0.00      0.35      0.01      0.00      0.00      0.00      0.00     63.72
12:10:01 AM       2     32.93      0.00      0.30      0.02      0.00      0.00      0.00      0.00     66.75
12:10:01 AM       3     30.23      0.00      0.23      0.03      0.00      0.00      0.00      0.00     69.51
12:10:01 AM       4     21.33      0.00      0.19      0.02      0.00      0.00      0.00      0.00     78.47
12:10:01 AM       5     20.28      0.00      0.15      0.01      0.00      0.00      0.00      0.00     79.57
12:10:01 AM       6     20.30      0.00      0.15      0.01      0.00      0.00      0.00      0.00     79.54
12:10:01 AM       7     26.14      0.00      0.11      0.01      0.00      0.00      0.00      0.00     73.74

java.lang.NumberFormatException: For input string: "all"
        at sun.misc.FloatingDecimal.readJavaFormatString(Unknown Source)
        at java.lang.Float.valueOf(Unknown Source)
        at java.lang.Float.<init>(Unknown Source)
        at net.atomique.ksar.Linux.Parser.parse(Parser.java:624)
        at net.atomique.ksar.kSar.parse(kSar.java:750)
        at net.atomique.ksar.FileRead.run(FileRead.java:62)

#!/bin/bash                                                                                                                                                                                                                                 
#
output="web1"
inpath="/tmp/sar/web1_sa"

change() {
    while read line; do
        temp1=`echo "$line" |awk '{print $1}'`
        temp2=`echo "$line" |awk '{print $2}'`
        if [ "$temp2" == "AM" ]; then
            newtime=`date -d "$temp1 AM" +%T`
            echo "`echo "$line" |sed "s/[0-9][0-9]:[0-9][0-9]:[0-9][0-9] AM/$(echo $newtime)/"`" >> $1_$output
        elif [ "$temp2" == "PM" ]; then
            newtime=`date -d "$temp1 PM" +%T`
            echo "`echo "$line" |sed "s/[0-9][0-9]:[0-9][0-9]:[0-9][0-9] PM/$(echo $newtime)/"`" >> $1_$output
        else
            echo "$line" >> $1_$output
        fi  
    done < $1
    echo >> $1_$output
}

for i in `ls $inpath/sar*`
do
    change $i &
done

2， patch 操作 
生成patch
leodemac-mini:openwebrtc-examples___stefanalund leo$ git format-patch HEAD^
  生成   0001-modify-for-load-leo-s-page.patch 

git format-patch -s 1bbe3c8c197a35f79bfddaba099270a2e54ea9c7


或者使用
git format-patch HEAD^ <==最近的1次commit的patch
git format-patch HEAD^^ <==最近的2次commit的patch
git format-patch HEAD^^^<==最近的3次commit的patch
git format-patch HEAD^^^^ <==最近的4次commit的patch
git format-patch HEAD^^^^^ <==不支持！！！！error！！！



使用patch


将补丁打上去。
patch -p1 < 0001-Added-liuxingde-test.patch

打開 patch 文件, 一開始就看得到 path 的路逕所在.

-p[n] 的 n 值, 只要取消多少條 / 及其左邊的路逕.
以 /usr/src/Linux 為例,
若 -p0 就是不取消任何路經
-p1 則將 / 取消, 得 usr/src/linux
-p2 則是將 /usr/ 取消, 得 src/linux
再以 src/linux 為例:
-p0 依然為 src/linux
-p1 則為 linux