根据文件名查找
|
1 |
find 路径 -name 文件名 |
压缩解压
|
1 2 |
tar -cvf 压缩后.tar *.jpg tar -xzvf 压缩包.tar |
授予文件全权限
|
1 |
chmod +777 文件名 |
修改文件夹拥有者
|
1 |
chown -R user folder |
强制删除文件
|
1 |
rm -rf 文件名 |
防火墙
|
1 2 3 4 |
sudo ufw status #查看防火墙状态 sudo ufw allow 80 #开放特定端口 sudo ufw allow from 47.99.123.240 #允许特定IP地址连接服务器的所有端口 sudo ufw delete allow from 47.99.123.240 #删除上面那条规则 |
ubuntu重启apache
sudo /etc/init.d/apache2 restart
vim
|
1 2 3 4 5 |
:wq 保存退出 i 插入 shift+^ 快速行首 shift+$ 快速行尾 :%s/sub/subs/g 将所有的sub替换为subs |
gnuplot
|
1 2 3 |
set term jpeg #将图片输出到文件 set output 'a.jpeg' plot 'Graphene_12.DOS.Tetrahedron' w l |
bc
|
1 |
typeset dd=$(echo "$d+0.3752"|bc) #小数运算 |
awk
|
1 2 |
awk -F" " 'BEGIN{ele=0} /m\+mul/{ele+=$6 ;print ele} END {print ele}' Graphene_BP_distance.out #打印有m+mul的一列数字和 eval $(awk '{ printf("x=%s",$1); }') #给外部变量x赋值 |
更新源
|
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 |
#备份配置文件 sudo cp /etc/apt/sources.list /etc/apt/sources.list.bak #打开文件 sudo vim /etc/apt/sources.list #重开终端，查看版本代号 #Ubuntu 12.04 (LTS)代号为precise #Ubuntu 14.04 (LTS)代号为trusty #Ubuntu 15.04 代号为vivid #Ubuntu 15.10 代号为wily #Ubuntu 16.04 (LTS)代号为xenial #Ubuntu 18.04 代号为bionic lsb_release -c #更新文件如下 deb http://mirrors.aliyun.com/ubuntu/ bionic main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu/ bionic main restricted universe multiverse deb http://mirrors.aliyun.com/ubuntu/ bionic-security main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu/ bionic-security main restricted universe multiverse deb http://mirrors.aliyun.com/ubuntu/ bionic-updates main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu/ bionic-updates main restricted universe multiverse deb http://mirrors.aliyun.com/ubuntu/ bionic-backports main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu/ bionic-backports main restricted universe multiverse deb http://mirrors.aliyun.com/ubuntu/ bionic-proposed main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu/ bionic-proposed main restricted universe multiverse #更新文件列表 sudo apt-get update |
