Shell on Sawyer Zheng's Blog

Tmux ---- A terminal multiplex tool

Tue, 10 Dec 2024 00:00:00 +0000

改变 prefix 按键的方发

参考：

til/tmux/change-the-default-prefix-key.md at master · jbranchaud/til · GitHub

修改文件 ~/.tmux.conf

1
2


unbind C-b
set -g prefix C-z

And then run :source-file ~/.tmux.conf.

Fish Shell ---- Friendly Interactive Shell

Tue, 16 Nov 2021 00:00:00 +0000

参考

Fish shell cheatsheet

completion 自动补全

快捷键

Ctrl + F
- 接受所有建议
Alt + F
- 接受部分建议
- 一个单词

变量处理

set 命令实现

eg:

 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16


# * 定义
set myVar "value"
echo $myVar
# output: value

# * 清除
set -e myVar

# * 检查存在
env | grep myVar

# * export: -x 或 --export
set -x myVar1 myVar2

# * 取消 export: -u 或 --unexport
set -u myVar1

异常

prompt 异常错误

call_shell

Thu, 07 Jan 2021 00:00:00 +0000

教程

https://stackabuse.com/executing-shell-commands-with-python/

Bash Notes

Fri, 11 Dec 2020 00:00:00 +0000

命令

gpg

gnu privacy guard

重定向

heredoc

eg:

1
2
3
4
5


sudo tee /etc/docker/daemon.json <<-'EOF'
{
 "registry-mirrors": ["https://o8npla25.mirror.aliyuncs.com"]
}
EOF

使用 XDG_HOME 存放 .bashrc

参考：

HiPhish's Workshop

把下面的内容存放到 /etc/profile.d/bash_xdg.sh 中：

 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17


# Make bash follow the XDG_CONFIG_HOME specification
_confdir=${XDG_CONFIG_HOME:-$HOME/.config}/bash
_datadir=${XDG_DATA_HOME:-$HOME/.local/share}/bash

# Source settings file
if [ -d "$_confdir" ]; then
 for f in bash_profile .bashrc ; do
 [ -f "$_confdir/$f" ] && . "$_confdir/$f"
 done
fi

# Change the location of the history file by setting the environment variable
[ ! -d "$_datadir" ] && mkdir -p "$_datadir"
HISTFILE="$_datadir/history"

unset _confdir
unset _datadir

string 字符串

基本语法

连接字符串

实现：连着写即可

argparse

Thu, 03 Sep 2020 00:00:00 +0000

argparse 模块, 辅助模块 shlex

辅助模块 shlex

eg: shlex.split('lpp –species-list Na NaH')

弹出错误提示

使用 parser.error("Your message.")

https://stackoverflow.com/questions/6722936/python-argparse-make-at-least-one-argument-required

 1
 2
 3
 4
 5
 6
 7
 8
 9
10


import argparse

parser = argparse.ArgumentParser()
parser.add_argument('-process')
parser.add_argument('-upload')

args = parser.parse_args()

if not (args.process or args.upload):
parser.error('No action requested, add -process or -upload')

Action 类

查看原码