ubuntu 使用小技巧

ubuntu 使用小技巧


一、terminal使用

  1. 使用tmux,让你一个窗口分割
  2. 修改窗口标题:
    修改文件~/.bash.rc添加
    # Update gnome terminal title
    

function termtitle() {
# take argument
PS1="\u@\h:\w$ "
TITLE=$1
shift
# update title
PROMPT_COMMAND=‘echo -ne “\033]0; $TITLE \007”’
}
```

在终端输入```termtitle "new title"```即可把窗口名称改为"new title"
  1. 缩短命令行的前缀xxx@xxxx,修改~/.bashrc文件的PS1变量

if [ " c o l o r p r o m p t " = y e s ] ; t h e n P S 1 = ′ color_prompt" = yes ]; then PS1=' colorprompt"=yes];thenPS1={debian_chroot:+($debian_chroot)}[\033[01;32m]\u@\h[\033[00m]:[\033[01;34m]\w[\033[00m]$ ’
else
PS1='KaTeX parse error: Expected '}', got 'EOF' at end of input: …ebian_chroot:+(debian_chroot)}\u@\h:\w$ ’
fi

```

SSL 证书创建问题

根据官方方法:
https://www.akadia.com/services/ssh_test_certificate.html
在步骤

dl@dl:~/my_github/my_room/libevent_https$ openssl x509 -req -days 365 -in server.csr -signkey server.key -out server.crt
Signature ok
subject=/C=AU/ST=Some-State/O=Internet Widgits Pty Ltd
Getting Private key
unable to write 'random state'

解决办法:

sudo rm ~/.rnd

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