Linux笔记

command line

alias

shell/bash

cd/rm/cp/mv/less/more/cat/tail/od

authoritication

user:group:other

vim

.bashrc

dir

rpm

yum

ssh

^d/^l/^c/^z/^u/^w/^r/

pipe

du/df/fileSystem

mount

tar/gzip/gunzip

scp/ftp

systemctl/service

reg

export/env variable

su -

root

shell script

std/serr/sin

redirect

grep

deploy

ssh秘钥登录配置

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cd ~/.ssh
cat id_rsa >> authorized_keys

sudo vim /etc/ssh/sshd_config

# 使用公钥授权登录
PubkeyAuthentication yes

# 是否允许以root身份ssh，no为不允许
PermitRootLogin no

.ssh目录权限必须为700，authorized_keys权限为600，user group 为登录用户 !

misc

多人共享命令行 IO

Cation: need root permission

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sudo screen -S foo # 指定screen作业的名称
sudo screen -x foo # 恢复之前离线的screen作业

vnstat 查看网卡流量使用及实时网速

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 vnstat --help
 vnStat 1.18 by Teemu Toivola <tst at iki dot fi>

         -q,  --query          query database
         -h,  --hours          show hours
         -d,  --days           show days
         -m,  --months         show months
         -w,  --weeks          show weeks
         -t,  --top10          show top 10 days
         -s,  --short          use short output
         -u,  --update         update database
         -i,  --iface          select interface (default: eth0)
         -?,  --help           short help
         -v,  --version        show version
         -tr, --traffic        calculate traffic
         -ru, --rateunit       swap configured rate unit
         -l,  --live           show transfer rate in real time

See also "--longhelp" for complete options list and "man vnstat".

dpkg

Debian 系的发行版的包管理系统。
dpkg is used to install, remove, and provide information about . deb packages.

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dpkg -L <packagename>           # dpkg is used to install, remove, and provide information about . deb packages.

netstat

  • 查看使用的端口号
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netstat -anp | grep port