软件列表，主要有几个值得说的，代理软件(chisel,
pi@raspberrypi:~ $ ls -l
total 28416
-rw-r--r-- 1 pi pi 3612 Dec 12 13:40 1.txt
-rwxrwxrwx 1 pi pi 7340032 Sep 4 20:02 chisel
-rwxr-xr-x 1 pi pi 3854 Apr 30 2019 chisel!
-rwxrwxrwx 1 pi pi 7143424 Feb 18 2021 chisel_1.7.6_linux_armv7
-rwxrwxrwx 1 pi pi 7405568 Apr 2 2020 chisel-linux-arm
-rwxr-xr-x 1 pi pi 88 Apr 30 2019 chiselserv.sh
drwxr-xr-x 3 pi pi 4096 Sep 5 2020 Desktop
drwxr-xr-x 2 pi pi 4096 Sep 5 2020 Documents
drwxr-xr-x 2 pi pi 4096 Sep 5 2020 Downloads
-rw-r--r-- 1 pi pi 256 Jan 30 2020 edit.dat
-rw-r--r-- 1 pi pi 3988 May 4 2019 fail.txt
-rw-r--r-- 1 pi pi 115 May 18 2019 getnat.py
drwxr-xr-x 9 pi pi 4096 Jun 11 2019 ggez
-rw-r--r-- 1 pi pi 1898 May 1 2019 icfonfig.txt
-rw-r--r-- 1 pi pi 10652 Apr 25 2019 index.html
top - 13:40:06 up 1:03, 2 users, load average: 0.30, 1.34, 1.89
Tasks: 114 total, 1 running, 69 sleeping, 0 stopped, 0 zombie
%Cpu(s): 18.9 us, 20.1 sy, 0.0 ni, 58.5 id, 1.1 wa, 0.0 hi, 1.4 si, 0.0 st
内存大小1gb，空闲一半，使用才60MB
KiB Mem : 949448 total, 522824 free, 60208 used, 366416 buff/cache
KiB Swap: 102396 total, 102396 free, 0 used. 815804 avail Mem
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
18510 root 20 0 8108 3292 2816 R 15.8 0.3 0:00.07 top
1 root 20 0 28244 6108 4860 S 0.0 0.6 0:06.66 systemd
2 root 20 0 0 0 0 S 0.0 0.0 0:00.00 kthreadd
4 root 0 -20 0 0 0 I 0.0 0.0 0:00.00 kworker/0:0H
6 root 0 -20 0 0 0 I 0.0 0.0 0:00.00 mm_percpu_wq
7 root 20 0 0 0 0 S 0.0 0.0 0:02.22 ksoftirqd/0
8 root 20 0 0 0 0 I 0.0 0.0 0:12.68 rcu_sched
9 root 20 0 0 0 0 I 0.0 0.0 0:00.00 rcu_bh
10 root rt 0 0 0 0 S 0.0 0.0 0:00.02 migration/0
11 root 20 0 0 0 0 S 0.0 0.0 0:00.00 cpuhp/0
12 root 20 0 0 0 0 S 0.0 0.0 0:00.00 cpuhp/1
13 root rt 0 0 0 0 S 0.0 0.0 0:00.01 migration/1
14 root 20 0 0 0 0 S 0.0 0.0 0:00.97 ksoftirqd/1
16 root 0 -20 0 0 0 I 0.0 0.0 0:00.00 kworker/1:0H
17 root 20 0 0 0 0 S 0.0 0.0 0:00.00 cpuhp/2
18 root rt 0 0 0 0 S 0.0 0.0 0:00.01 migration/2
19 root 20 0 0 0 0 S 0.0 0.0 0:01.07 ksoftirqd/2
21 root 0 -20 0 0 0 I 0.0 0.0 0:00.00 kworker/2:0H
分区状况，一个15GB的SD卡，已经几乎满了
pi@raspberrypi:~ $ df -h
Filesystem Size Used Avail Use% Mounted on
/dev/root 15G 14G 970M 94% /
devtmpfs 460M 0 460M 0% /dev
tmpfs 464M 0 464M 0% /dev/shm
tmpfs 464M 18M 446M 4% /run
tmpfs 5.0M 4.0K 5.0M 1% /run/lock
tmpfs 464M 0 464M 0% /sys/fs/cgroup
/dev/mmcblk0p6 65M 22M 44M 34% /boot
tmpfs 93M 0 93M 0% /run/user/1000
bashrc启动脚本
pi@raspberrypi:~ $ cat .bashrc
这是主要的我改的部分，涉及到代理（cisel，vpnserver，pptpd，）
TODO：iptable这一行是啥意思？
sudo ./chisel server -v -p 端口 --socks5 --reverse --auth 賬號:密碼 t &
sudo /usr/local/vpnserver/vpnserver start &
#sudo service pptpd restart
#sudo iptables -t nat -A POSTROUTING -o wlan0 -j MASQUERADE
sudo memcached -l 0.0.0.0:11212 &
sudo iptables -t nat -A POSTROUTING -o wlan0 -j MASQUERADE
研究为何他能够sudo不需要输入密码
link：https://www.jianshu.com/p/5d02428f313d
pi@raspberrypi:~ $ sudo cat /etc/sudoers
#
# This file MUST be edited with the 'visudo' command as root.
#
# Please consider adding local content in /etc/sudoers.d/ instead of
# directly modifying this file.
#
# See the man page for details on how to write a sudoers file.
#
Defaults env_reset
Defaults mail_badpass
Defaults secure_path="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
# Host alias specification
# User alias specification
# Cmnd alias specification
# User privilege specification
root ALL=(ALL:ALL) ALL
# Allow members of group sudo to execute any command
%sudo ALL=(ALL:ALL) ALL
# See sudoers(5) for more information on "#include" directives:
#includedir /etc/sudoers.d
关键在于文件/etc/sudoers.d/010_pi-nopasswd
pi@raspberrypi:~ $ sudo ls /etc/sudoers.d
010_at-export 010_pi-nopasswd README
pi@raspberrypi:~ $ sudo cat /etc/sudoers.d/README
#
# As of Debian version 1.7.2p1-1, the default /etc/sudoers file created on
# installation of the package now includes the directive:
#
# #includedir /etc/sudoers.d
#
# This will cause sudo to read and parse any files in the /etc/sudoers.d
# directory that do not end in '~' or contain a '.' character.
#
# Note that there must be at least one file in the sudoers.d directory (this
# one will do), and all files in this directory should be mode 0440.
#
# Note also, that because sudoers contents can vary widely, no attempt is
# made to add this directive to existing sudoers files on upgrade. Feel free
# to add the above directive to the end of your /etc/sudoers file to enable
# this functionality for existing installations if you wish!
#
# Finally, please note that using the visudo command is the recommended way
# to update sudoers content, since it protects against many failure modes.
# See the man page for visudo for more information.
#
这个文件是关键
pi@raspberrypi:~ $ sudo cat /etc/sudoers.d/010_pi-nopasswd
pi ALL=(ALL) NOPASSWD: ALL
pi@raspberrypi:~ $ sudo cat /etc/sudoers.d/
010_at-export 010_pi-nopasswd README
pi@raspberrypi:~ $ sudo cat /etc/sudoers.d/010_at-export
Defaults env_keep += "NO_AT_BRIDGE"
pi@raspberrypi:~ $