Setup wireguard VPN

2020-05-26 wireguard vpn linux ubuntu

Copy file content to clipboard in terminal

2020-04-19 shell linux ubuntu

Why there is no "gets" function in C standard library?

2020-04-18 gcc c linux

Gnome display settings enable multiple scales

2020-04-16 linux ubuntu

passwd & shadow

2019-04-06 passwd linux

Linux user's password is saved in /etc/shadow file, format like:

Config Postfix as a Send-Only SMTP Server on Ubuntu 18.04

2019-02-21 mail smtp linux ubuntu

每次新装服务器都忘了怎么安装这个mail sender的服务，记一下。

rsync使用root同步没权限

2019-02-21 rsync linux

Ubuntu 18.04 rc.local

2019-01-30 linux ubuntu

Ubuntu 18.04 removed the /etc/rc.local file, so if you still want to use it:

Vim -x to create encrypted file

2018-10-18 vim linux

使用vim -x filename.txt可以创建加密文件。

CodeCompiler3小结

2018-10-15 strace linux python

趁刚写完这个项目，把一些学到的东西写一下。

strace permission error

2018-10-03 linux

When run strace command in Ubuntu, I got an error:

Set up ssh keys

2016-01-06 ssh linux