1 systemd

1.1 service启动顺序分析

1 2	# a.列出各项启动占用的时间，但由于是并行启动，启动时间不决定启动完成先后 systemd-analyze blame

1 2	# b.列出启动矢量图，用浏览器打开boot.svg文件得到各service启动顺序 systemd-analyze plot > boot.svg

2 apt

2.1 设置apt默认是否保留安装包

默认情况下使用apt install安装包时，会自动下载安装包及其依赖包到/var/cache/apt/archieves目录，可通过如下配置改变这一行为：

#禁止保存
echo 'Binary::apt::APT::Keep-Downloaded-Packages "0";' | sudo tee /etc/apt/apt.conf.d/10apt-keep-downloads

#允许保存
echo 'Binary::apt::APT::Keep-Downloaded-Packages "1";' | sudo tee /etc/apt/apt.conf.d/10apt-keep-downloads

2.2 apt-get 只下载不安装

# 下载单个文件
apt download [软件名]
或
apt-get download [软件名]
# 下载包及依赖
apt install -d [软件名]
或
apt-get install -d [软件名]

2.3 离线安装deb

1
2
3

dpkg -i /test/*
或
dpkg -i /test/*.deb

3 network

3.1 静态IP配置

interface方式修改，可以保持网口一直处于激活状态，IP地址一只可用；dhcpcd方式咱不支持。

# interfaces(5) file used by ifup(8) and ifdown(8)
# Include files from /etc/network/interfaces.d:
source /etc/network/interfaces.d/*
    
iface lo inet loopback
# eth0配置
auto eth0                     # 网卡自启
allow-hotplug eth0
iface eth0 inet static
address 192.168.1.11
netmask 255.255.255.0
gateway 192.168.1.1
dns-nameservers 223.5.5.5 114.114.114.114
dns-search foo.org bar.com

# wlan0 静态IP配置
auto wlan0
allow-hotplug wlan0
#iface wlan0 inet dhcp
iface wlan0 inet static
#wpa-conf /etc/wpa_supplicant/wpa_supplicant.conf
address 10.10.10.1
netmask 255.255.255.0
#gateway 10.10.10.1
#dns-nameservers 223.5.5.5 114.114.114.114
#dns-search foo.org bar.com

3.2 wifi配置

修改/etc/wpa_supplicant/wpa_supplicant.conf

# 加入热点名称，密码等，可设置多个；密码支持明文和密文
ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=netdev
update_config=1

network={
        ssid="CU_XIN_www1"
        psk=fe12b2ee6adca1b95e4561db63f95c7dcf5708f756eb920bdc96592a522bd6bd
        priority=6
}

network={
        ssid="tetestAPI"
        psk="zxc111111111111111111111"
        priority=5
}

network={
        ssid="_office_R3_2.4G"
        psk="1234...ssssssssssssss."
}

修改/etc/network/interfaces

# 可配置dhcp及static方式
auto wlan0
allow-hotplug wlan0
iface wlan0 inet dhcp
wpa-conf /etc/wpa_supplicant/wpa_supplicant.conf
#iface wlan0 inet static
#address 10.10.10.1
#netmask 255.255.255.0
#gateway 10.10.10.1
#dns-nameservers 223.5.5.5 114.114.114.114
#dns-search foo.org bar.com

4 vim

4.1 配置鼠标复制黏贴

$ cat /etc/vim/vimrc.local
source /usr/share/vim/vim90/defaults.vim
let skip_defaults_vim = 1
if has('mouse')
   set mouse-=a
endif